Harsh mangla
Download as PPTX, PDF1 like464 views
This document contains information about electrolysis of water to produce hydrogen gas. It discusses how electrolysis works by using electricity to split water into hydrogen and oxygen gases. It notes that hydrogen has around 2-3 times the energy density of gasoline and over 200 times that of lithium-ion batteries, making it a promising way to store energy. The document describes the components needed for electrolysis including water, an electrolyte, metal electrodes, and a power source. It explains that a proton exchange membrane is used to facilitate the transfer of protons during the process. Experiments are proposed to build and test an electrolyzer system powered by solar cells.
1 of 17
Downloaded 15 times
Recommended
PEM Water Electrolysis
PEM Water ElectrolysisRichard Smith
油
This document summarizes proton exchange membrane water electrolysis. It discusses how water electrolysis produces hydrogen and oxygen gas through an electric energy input that splits water molecules. A proton exchange membrane electrolyzer uses bipolar plates, gas diffusion layers, a membrane electrode assembly, and electrocatalysts. The membrane allows for hydronium ion transport without electron conduction. Electrolysis provides a method for renewable energy storage and production of hydrogen as an energy carrier or for green methanol synthesis.Lecture 5-6: Hydrogen, Storage & Batteries
Lecture 5-6: Hydrogen, Storage & Batteriescdtpv
油
This document discusses various topics related to hydrogen as a transport fuel, batteries, and fuel cells. It provides information on:
- Different types of vehicles that use hydrogen or batteries as their fuel/power source
- Methods for producing and storing hydrogen
- How electrochemical cells like batteries and fuel cells work through redox reactions
- Characteristics and reactions of different types of batteries including lead-acid, nickel-cadmium, and lithium-ion batteries.A review on water electrolysis
A review on water electrolysisABDUL RAZZAQ SHAHID
油
1. The document provides a historical overview of water electrolysis from its discovery in 1789 to modern developments. Nicholson and Carlisle were the first to develop the technique in 1800, and by 1902 there were over 400 industrial units in operation.
2. It explains the theory behind water electrolysis, including the chemical reactions that produce hydrogen and oxygen, factors that determine minimum voltage requirements, and sources of inefficiency.
3. Various methods for producing hydrogen through water electrolysis are briefly described, including alkaline electrolysis, proton exchange membrane electrolysis, and producing hydrogen as a byproduct of chloralkali production. Advanced alkaline systems and high-pressure designs are highlighted.Thermodynamics & electrochemical kinetics of fuel cell
Thermodynamics & electrochemical kinetics of fuel cellKowshigan S V
油
Fuel cell technology is discussed, including:
1) Fuel cells convert chemical energy from fuel combustion into electrical energy through electrochemical reactions, with hydrogen and oxygen commonly used.
2) The maximum electrical work from a fuel cell is given by the change in Gibbs free energy of the electrochemical reaction.
3) Different fuel cells use different electrochemical reactions depending on the fuel, with reaction types and optimal temperatures varying between low, medium, and high temperature fuel cells.Principle and types of Fuel cells 
Principle and types of Fuel cells Yash Thakkar
油
This document provides an overview of an active learning assignment on fuel cells. It discusses the basic components and workings of a fuel cell, including the electrodes, electrolyte, and catalyst. It also describes the reactions that take place in fuel cells to convert chemical energy to electrical energy. Finally, it outlines the main types of fuel cells, classified based on their electrolyte: alkaline, molten carbonate, phosphoric acid, proton exchange membrane, and solid oxide fuel cells. For each type it provides details on operating temperature, efficiency, applications, and other characteristics.Pemfc ppt
Pemfc pptRonak Patel
油
The document discusses proton exchange membrane fuel cells (PEMFC). It provides an overview of fuel cells in general and describes the history and basic components of PEMFCs specifically. PEMFCs use a solid polymer electrolyte that allows protons to pass through but blocks electrons and gases. They operate at a low temperature of 50-100属C and have advantages like rapid load following, compact design, and high power density. Applications include transportation, portable power, and stationary power generation. The current PEM market is dominated by portable devices, with transportation and stationary power making up smaller shares.Hydrogen production using solar energy (PV cell)
Hydrogen production using solar energy (PV cell)Mohamed Bn Younes
油
This study offers an overview of the technologies for hydrogen production especially alkaline water electrolysis using solar energy. Solar Energy and Hydrogen (energy carrier) are possible replacement options for fossil fuel and its associated problems of availability and high prices which are devastating small, developing, oil-importing economies. But a major drawback to the full implementation of solar energy, in particular photovoltaic (PV), is the lowering of conversion efficiency of PV cells due to elevated cell temperatures while in operation. Also, hydrogen as an energy carrier must be produced in gaseous or liquid form before it can be used as fuel; but its present major conversion process produces an abundance of carbon dioxide which is harming the environment through global warming. Alkaline water electrolysis is considered to be a basic technique for hydrogen production. In the present study, the effects of electrolyte concentration, solar insolation and space between the pair of electrodes on the amount of hydrogen produced and consequently on the overall electrolysis efficiency are experimentally investigated. The water electrolysis of potassium hydroxide aqueous solution was conducted under atmospheric pressure using stainless steel 316 as electrodes.
The experimental results showed that the performance of alkaline water electrolysis unit is dominated by operational parameters like the electrolyte concentration and the gap between the electrodes. Smaller gaps between the pair of electrodes and was demonstrated to produce higher rates of hydrogen at higher system efficiency
This study shows some attempts to product pure Hydrogen and pure Oxygen as both Hydrogen and Oxygen have there commercial demands.
Dhaka | Aug-15 | Electricity Generation from Pathor Kuchi Leaf (PKL)- An Innn...
Dhaka | Aug-15 | Electricity Generation from Pathor Kuchi Leaf (PKL)- An Innn...Smart Villages
油
Mohammad Al Mamun, Assistant Professor, Department of Chemistry, Jagannath University
As part of the series of regional engagements in South Asia, Smart Villages is organising a workshop on off-grid rural energy provision in Bangladesh. The country has the fastest growing programme in the world with an estimated 70,000 solar home systems (SHS) installed per day. More than 3 million SHS have been installed in off-grid rural areas in the country bringing electricity to an estimated 13 million people.
The aim of the workshop is to gain insights from the experience of a wide variety of stakeholders in Bangladesh who are involved in rural off-grid energy provision in the country. This workshop will offer a number of potential lessons to other countries within the region. The workshop provides an opportunity to gain a deeper understanding of the opportunities presented by expansion of solar home systems (SHS) and mini-grids to off-grid rural communities and the challenges faced in this expansion. During this workshop we will also investigate the potential impact of energy access on rural livelihoods in the country.
The workshop is being jointly organised by Smart Villages and Practical Action.Fuel cells
Fuel cellsHiren Mahida
油
This document provides an overview of fuel cells presented by Mahida Hiren R. It begins with an introduction to fuel cells, explaining that they convert hydrogen and oxygen into water and produce electricity and heat in the process. It then discusses the various types of fuel cells, including hydrogen oxygen cells, phosphoric acid cells, molten carbonate cells, solid oxide cells, and cells using fuels like methanol, ammonia, and hydrazine. The document also covers fuel cell design principles, operation, efficiency, applications, and the sources of polarization that reduce fuel cell performance.Encycl o-e fuel-cells
Encycl o-e fuel-cellsCh鱈 Thu畉n Nguy畛n
油
A fuel cell is a device that converts chemical energy directly into electrical energy through electrochemical reactions. There are several types of fuel cells classified by their electrolyte, including alkaline fuel cells (AFC), proton exchange membrane fuel cells (PEMFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), and solid oxide fuel cells (SOFC). Fuel cells have advantages over heat engines like higher efficiency, fewer moving parts requiring less maintenance, and modularity to increase capacity. However, fuel cells also have challenges to overcome like fuel processing requirements, catalyst costs, startup times, and high temperature durability for some types.How fuel cells work
How fuel cells workKamaraja AS
油
Fuel cells generate electricity through an electrochemical process in which hydrogen and oxygen are combined to produce water and electricity. There are several types of fuel cells that differ based on their electrolyte material, including phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, and proton exchange membrane fuel cells. Fuel cells have higher energy conversion efficiencies than combustion engines and can produce electricity as long as fuel is supplied, unlike batteries which have a limited capacity.proton exchange membrane fuel cell
proton exchange membrane fuel cellSubir paul
油
Proton Exchange Membrane Fuel Cells (PEMFC) are promising contender as the next generation energy source because of their striking features including high energy density, low operating temperature, easy scale up and zero environmental pollution. Proton exchange membrane fuel cells 
Proton exchange membrane fuel cells AdityaBulbule1
油
A proton exchange membrane fuel cell (PEMFC) consists of a cathode, anode, and electrolyte membrane. Hydrogen is oxidized at the anode, producing protons that pass through the membrane to the cathode. Oxygen is reduced at the cathode, producing water and electricity. PEMFCs operate between 60-180 degrees C and use platinum catalysts. They are well suited for applications like fuel cell vehicles and small stationary power due to their moderate operating temperatures and manageable polymer materials.Fuel cells
Fuel cellsRoshan Sunil Kurian
油
Fuel cells are electrochemical devices that convert chemical energy from hydrogen and oxygen directly into low-voltage DC electricity and produce water as a byproduct. A hydrogen-oxygen fuel cell has three chambers separated by two porous electrodes, with the middle chamber containing an electrolyte, and at high temperatures the electrolyte acts as a filter. While fuel cells have advantages like high efficiency, power density, silence, and quick operation, they also have disadvantages such as high cost, short lifespan, low voltage output, and needing careful material selection.Solar hydrogen generation
Solar hydrogen generationsbit
油
Our intention is to make hydrogen as a future fuel
The construction details of the electrolyser with a schematic drawing of the experimental set-up for production of H2 are givenFuel cell
Fuel cellHoang Tien
油
a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent - from MSE-HUST k54Fuel Cells
Fuel Cellschrisd
油
Hydrogen fuel cells work through redox reactions where hydrogen and oxygen react to produce water, generating an electric current in the process. The document goes on to explain how a proton exchange membrane fuel cell works, where hydrogen is oxidized at the anode, producing protons and electrons, and oxygen is reduced at the cathode. The protons flow through the membrane to the cathode while the electrons flow through an external circuit, powering a device. This process produces water as the only byproduct. The document also lists some pros and cons of hydrogen fuel cells.Fuel Cell Electric Vehicle
Fuel Cell Electric VehicleSajid Sheikh
油
In this Presentation I have discussed about FUEL CELL PROPERTY FOR ELECTRIC VEHICLE. Comparision of Various EV with respect to FCEV is discussed with the help of IEEE paper.What are the Fuel Cell properties required for Vehicle.
Hydrogen energy
Hydrogen energyDiponegoro University
油
Hydrogen is the most abundant element in the universe and can be used as a renewable energy. It rarely occurs naturally on Earth as H2. There are three main production methods - chemical reforming, electrolysis, and thermochemical processes. Chemical reforming, also called steam reforming, uses high temperatures to produce hydrogen. Electrolysis uses electricity to split water into hydrogen and oxygen. Thermochemical processes employ chemical reactions and heat to produce hydrogen at lower temperatures than steam reforming. Fuel cells that use hydrogen have higher efficiencies than gasoline engines and can power vehicles. Further improvements to hydrogen production and fuel cells are needed to enable widespread use.Phosphoric acid fuel cell
Phosphoric acid fuel cellLady Doak College
油
A phosphoric acid fuel cell has two porous electrodes that collect charge - a negative electrode of hydrogen gas and a positive electrode of oxygen or air. Phosphoric acid acts as the electrolyte, and platinum catalysts on both electrodes accelerate the electrochemical reactions. Hydrogen ions migrate through the electrolyte to the positive electrode, where they interact with oxygen to produce water, while electrons flow through an external load to provide electricity. The fuel cell operates between 150-200 degrees Celsius and has an actual voltage of 0.7-0.8 volts, lower than its theoretical potential of 1.23 volts.SOLID OXIDE FUEL CELLS
SOLID OXIDE FUEL CELLSVidhyaprakash Venkatesan
油
A solid oxide fuel cell (SOFC) works by using oxygen ions conducting through a solid ceramic electrolyte to generate electricity from hydrogen or other fuels. It consists of an anode and cathode separated by an electrolyte, and produces electricity through an electrochemical reaction without combustion. SOFCs operate at high temperatures between 1000-1800 degrees F, which allows them to use a wide variety of fuels. They are more efficient than traditional power generation and are being developed for applications such as stationary power plants, transportation, and residential use.Fuel cell presentation
Fuel cell presentationVirat Dhabalia
油
This document provides an overview of fuel cell technology. It discusses how fuel cells work by electrochemically combining hydrogen and oxygen to generate electricity and heat. The document describes the key components of a fuel cell and different types of fuel cells. It also outlines various applications of fuel cell technology in transportation, stationary power generation, portable power devices, and more. The benefits of fuel cells are highlighted as being clean, efficient, reliable and durable. Challenges to commercialization are noted as reducing costs, developing hydrogen infrastructure, and managing heat from the cells.General fuel cell
General fuel cellUsman Shah
油
I Hope You all like it very much. I wish it is beneficial for all of you and you can get enough knowledge from it. Clear and appropriate objectives, in terms of what the audience ought to feel, think, and do as a result of seeing the presentation. Objectives are realistic and may be intermediate parts of a wider plan.Fuel cell
Fuel cellSai Sri Ram Chaganti
油
Fuel cell is a galvanic cell in which chemical energy of fuel and oxidant (O2) system is converted in to electrical energy.
Hydrogen as fuel 
Hydrogen as fuel karthikvshetty
油
Hydrogen is the most abundant element in the universe but does not exist naturally on Earth. It has potential as a clean fuel for vehicles and devices. Currently it is mainly produced from methane, but can also be generated through electrolysis and other methods. Hydrogen is colorless, odorless and highly flammable. It can power vehicles and devices through combustion or in fuel cells, which generate electricity through electrochemical reactions with oxygen and have higher efficiency than combustion engines. Widespread use of hydrogen faces challenges including lack of infrastructure and need for cost reductions in production and fuel cells.Fuel cells
Fuel cellsVibha Anand
油
This presentation provides an overview of fuel cells, including their design, operation, types, advantages/disadvantages, and applications. It discusses how fuel cells work by electrochemically combining hydrogen and oxygen to produce electricity and water. The document outlines different classifications of fuel cells based on temperature, electrolyte, physical state of fuel used. It also compares fuel cells to batteries and internal combustion engines. Recent developments and applications of fuel cells in areas like transportation, power generation, and specialty uses are presented.5th Lecture on Electrochemistry | Chemistry Part I | 12th Std
5th Lecture on Electrochemistry | Chemistry Part I | 12th StdAnsari Usama
油
1) A galvanic cell consists of two half-cells separated by a salt bridge. At the interface between a metal electrode and solution, there is a potential difference called the electrode potential. The overall potential of the cell is called the electromotive force (emf).
2) The standard cell potential is the sum of the standard electrode potentials measured under standard conditions (1M concentrations, 1 atm pressure, 25属C). The Nernst equation relates the cell potential to concentrations and allows calculations of cell and electrode potentials.
3) The maximum work a galvanic cell can perform is equal to the negative of the change in Gibbs free energy of the cell reaction. The standard cell potential is directlyFuel cell
Fuel cellNaman Meena
油
The document discusses different types of fuel cells, including their basic working principles and comparisons. It provides information on proton exchange membrane fuel cells (PEMFC), alkaline fuel cells (AFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC), and others. It compares factors such as efficiency, capital cost, and operating costs between different generation systems like reciprocating engines, gas turbines, photovoltaics, wind turbines, and fuel cells.Electrolysis of brine
Electrolysis of brineLaura Ortega
油
Electrolysis of brine PPT, from my chemistry teacher. Mr.Bedford. For anyone who can use this for help. This is for IGCSE /GCSE Level. Intro separate hydrogen and oxygen from water through electrolysis
Intro separate hydrogen and oxygen from water through electrolysisrahulchinoy
油
This document provides instructions for building a home electrolysis system to generate hydrogen and oxygen gases from water. It describes collecting the gases in plastic bottles by running electrolyzed water through the bottles. Electrodes made of braided wire and plastic sheeting are used to separate the hydrogen and oxygen during electrolysis when connected to a 6-12V battery power source. The generated gases can then be supplied to a vehicle engine through the fuel intake to potentially serve as an alternative to gasoline. Safety disclaimers are included as the instructions note the concept has not been built and tested by the author.More Related Content
What's hot (20)
Fuel cells
Fuel cellsHiren Mahida
油
This document provides an overview of fuel cells presented by Mahida Hiren R. It begins with an introduction to fuel cells, explaining that they convert hydrogen and oxygen into water and produce electricity and heat in the process. It then discusses the various types of fuel cells, including hydrogen oxygen cells, phosphoric acid cells, molten carbonate cells, solid oxide cells, and cells using fuels like methanol, ammonia, and hydrazine. The document also covers fuel cell design principles, operation, efficiency, applications, and the sources of polarization that reduce fuel cell performance.Encycl o-e fuel-cells
Encycl o-e fuel-cellsCh鱈 Thu畉n Nguy畛n
油
A fuel cell is a device that converts chemical energy directly into electrical energy through electrochemical reactions. There are several types of fuel cells classified by their electrolyte, including alkaline fuel cells (AFC), proton exchange membrane fuel cells (PEMFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), and solid oxide fuel cells (SOFC). Fuel cells have advantages over heat engines like higher efficiency, fewer moving parts requiring less maintenance, and modularity to increase capacity. However, fuel cells also have challenges to overcome like fuel processing requirements, catalyst costs, startup times, and high temperature durability for some types.How fuel cells work
How fuel cells workKamaraja AS
油
Fuel cells generate electricity through an electrochemical process in which hydrogen and oxygen are combined to produce water and electricity. There are several types of fuel cells that differ based on their electrolyte material, including phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, and proton exchange membrane fuel cells. Fuel cells have higher energy conversion efficiencies than combustion engines and can produce electricity as long as fuel is supplied, unlike batteries which have a limited capacity.proton exchange membrane fuel cell
proton exchange membrane fuel cellSubir paul
油
Proton Exchange Membrane Fuel Cells (PEMFC) are promising contender as the next generation energy source because of their striking features including high energy density, low operating temperature, easy scale up and zero environmental pollution. Proton exchange membrane fuel cells
Proton exchange membrane fuel cells AdityaBulbule1
油
A proton exchange membrane fuel cell (PEMFC) consists of a cathode, anode, and electrolyte membrane. Hydrogen is oxidized at the anode, producing protons that pass through the membrane to the cathode. Oxygen is reduced at the cathode, producing water and electricity. PEMFCs operate between 60-180 degrees C and use platinum catalysts. They are well suited for applications like fuel cell vehicles and small stationary power due to their moderate operating temperatures and manageable polymer materials.Fuel cells
Fuel cellsRoshan Sunil Kurian
油
Fuel cells are electrochemical devices that convert chemical energy from hydrogen and oxygen directly into low-voltage DC electricity and produce water as a byproduct. A hydrogen-oxygen fuel cell has three chambers separated by two porous electrodes, with the middle chamber containing an electrolyte, and at high temperatures the electrolyte acts as a filter. While fuel cells have advantages like high efficiency, power density, silence, and quick operation, they also have disadvantages such as high cost, short lifespan, low voltage output, and needing careful material selection.Solar hydrogen generation
Solar hydrogen generationsbit
油
Our intention is to make hydrogen as a future fuel
The construction details of the electrolyser with a schematic drawing of the experimental set-up for production of H2 are givenFuel cell
Fuel cellHoang Tien
油
a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent - from MSE-HUST k54Fuel Cells
Fuel Cellschrisd
油
Hydrogen fuel cells work through redox reactions where hydrogen and oxygen react to produce water, generating an electric current in the process. The document goes on to explain how a proton exchange membrane fuel cell works, where hydrogen is oxidized at the anode, producing protons and electrons, and oxygen is reduced at the cathode. The protons flow through the membrane to the cathode while the electrons flow through an external circuit, powering a device. This process produces water as the only byproduct. The document also lists some pros and cons of hydrogen fuel cells.Fuel Cell Electric Vehicle
Fuel Cell Electric VehicleSajid Sheikh
油
In this Presentation I have discussed about FUEL CELL PROPERTY FOR ELECTRIC VEHICLE. Comparision of Various EV with respect to FCEV is discussed with the help of IEEE paper.What are the Fuel Cell properties required for Vehicle.
Hydrogen energy
Hydrogen energyDiponegoro University
油
Hydrogen is the most abundant element in the universe and can be used as a renewable energy. It rarely occurs naturally on Earth as H2. There are three main production methods - chemical reforming, electrolysis, and thermochemical processes. Chemical reforming, also called steam reforming, uses high temperatures to produce hydrogen. Electrolysis uses electricity to split water into hydrogen and oxygen. Thermochemical processes employ chemical reactions and heat to produce hydrogen at lower temperatures than steam reforming. Fuel cells that use hydrogen have higher efficiencies than gasoline engines and can power vehicles. Further improvements to hydrogen production and fuel cells are needed to enable widespread use.Phosphoric acid fuel cell
Phosphoric acid fuel cellLady Doak College
油
A phosphoric acid fuel cell has two porous electrodes that collect charge - a negative electrode of hydrogen gas and a positive electrode of oxygen or air. Phosphoric acid acts as the electrolyte, and platinum catalysts on both electrodes accelerate the electrochemical reactions. Hydrogen ions migrate through the electrolyte to the positive electrode, where they interact with oxygen to produce water, while electrons flow through an external load to provide electricity. The fuel cell operates between 150-200 degrees Celsius and has an actual voltage of 0.7-0.8 volts, lower than its theoretical potential of 1.23 volts.SOLID OXIDE FUEL CELLS
SOLID OXIDE FUEL CELLSVidhyaprakash Venkatesan
油
A solid oxide fuel cell (SOFC) works by using oxygen ions conducting through a solid ceramic electrolyte to generate electricity from hydrogen or other fuels. It consists of an anode and cathode separated by an electrolyte, and produces electricity through an electrochemical reaction without combustion. SOFCs operate at high temperatures between 1000-1800 degrees F, which allows them to use a wide variety of fuels. They are more efficient than traditional power generation and are being developed for applications such as stationary power plants, transportation, and residential use.Fuel cell presentation
Fuel cell presentationVirat Dhabalia
油
This document provides an overview of fuel cell technology. It discusses how fuel cells work by electrochemically combining hydrogen and oxygen to generate electricity and heat. The document describes the key components of a fuel cell and different types of fuel cells. It also outlines various applications of fuel cell technology in transportation, stationary power generation, portable power devices, and more. The benefits of fuel cells are highlighted as being clean, efficient, reliable and durable. Challenges to commercialization are noted as reducing costs, developing hydrogen infrastructure, and managing heat from the cells.General fuel cell
General fuel cellUsman Shah
油
I Hope You all like it very much. I wish it is beneficial for all of you and you can get enough knowledge from it. Clear and appropriate objectives, in terms of what the audience ought to feel, think, and do as a result of seeing the presentation. Objectives are realistic and may be intermediate parts of a wider plan.Fuel cell
Fuel cellSai Sri Ram Chaganti
油
Fuel cell is a galvanic cell in which chemical energy of fuel and oxidant (O2) system is converted in to electrical energy.
Hydrogen as fuel
Hydrogen as fuel karthikvshetty
油
Hydrogen is the most abundant element in the universe but does not exist naturally on Earth. It has potential as a clean fuel for vehicles and devices. Currently it is mainly produced from methane, but can also be generated through electrolysis and other methods. Hydrogen is colorless, odorless and highly flammable. It can power vehicles and devices through combustion or in fuel cells, which generate electricity through electrochemical reactions with oxygen and have higher efficiency than combustion engines. Widespread use of hydrogen faces challenges including lack of infrastructure and need for cost reductions in production and fuel cells.Fuel cells
Fuel cellsVibha Anand
油
This presentation provides an overview of fuel cells, including their design, operation, types, advantages/disadvantages, and applications. It discusses how fuel cells work by electrochemically combining hydrogen and oxygen to produce electricity and water. The document outlines different classifications of fuel cells based on temperature, electrolyte, physical state of fuel used. It also compares fuel cells to batteries and internal combustion engines. Recent developments and applications of fuel cells in areas like transportation, power generation, and specialty uses are presented.5th Lecture on Electrochemistry | Chemistry Part I | 12th Std
5th Lecture on Electrochemistry | Chemistry Part I | 12th StdAnsari Usama
油
1) A galvanic cell consists of two half-cells separated by a salt bridge. At the interface between a metal electrode and solution, there is a potential difference called the electrode potential. The overall potential of the cell is called the electromotive force (emf).
2) The standard cell potential is the sum of the standard electrode potentials measured under standard conditions (1M concentrations, 1 atm pressure, 25属C). The Nernst equation relates the cell potential to concentrations and allows calculations of cell and electrode potentials.
3) The maximum work a galvanic cell can perform is equal to the negative of the change in Gibbs free energy of the cell reaction. The standard cell potential is directlyFuel cell
Fuel cellNaman Meena
油
The document discusses different types of fuel cells, including their basic working principles and comparisons. It provides information on proton exchange membrane fuel cells (PEMFC), alkaline fuel cells (AFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC), and others. It compares factors such as efficiency, capital cost, and operating costs between different generation systems like reciprocating engines, gas turbines, photovoltaics, wind turbines, and fuel cells.Viewers also liked (14)
Electrolysis of brine
Electrolysis of brineLaura Ortega
油
Electrolysis of brine PPT, from my chemistry teacher. Mr.Bedford. For anyone who can use this for help. This is for IGCSE /GCSE Level. Intro separate hydrogen and oxygen from water through electrolysis
Intro separate hydrogen and oxygen from water through electrolysisrahulchinoy
油
This document provides instructions for building a home electrolysis system to generate hydrogen and oxygen gases from water. It describes collecting the gases in plastic bottles by running electrolyzed water through the bottles. Electrodes made of braided wire and plastic sheeting are used to separate the hydrogen and oxygen during electrolysis when connected to a 6-12V battery power source. The generated gases can then be supplied to a vehicle engine through the fuel intake to potentially serve as an alternative to gasoline. Safety disclaimers are included as the instructions note the concept has not been built and tested by the author.
C4 And C5 Multiple Choice Revision Quiz
C4 And C5 Multiple Choice Revision QuizSyed Kazmi
油
This document contains a 20 question multiple choice quiz about concepts related to atomic structure, bonding, and compounds. The questions cover topics like ionic bonding, metallic bonding, properties of ionic and covalent compounds, electron configuration, and electrolysis.Ammonia & Its Salts
Ammonia & Its Saltsunknown777
油
This document discusses the uses and manufacturing of ammonia and its salts. It notes that ammonia is used in refrigeration as a cooling agent and in the production of nitrogenous fertilizers and explosives like TNT through reactions with nitric acid and organic substances. The document also examines the properties of ammonia and the Ostwald process used in its manufacture.Electrolysis 
Electrolysis Rossita Radzak
油
The three main factors that affect the electrolysis of an aqueous solution are:
1) The position of ions in the electrochemical series, which determines which ions will be reduced or oxidized at the electrodes.
2) The concentration of ions or electrolytes in the solution. Higher concentrations result in greater rates of reaction.
3) The type of electrodes used, as certain electrodes may dissolve and alter the composition of the solution during electrolysis.An Introduction to Brine Waste
An Introduction to Brine WasteChristos Charisiadis
油
This document discusses brine waste from various desalination processes. It describes the characteristics of brine from multi-stage flash distillation (MSF), multi-effect distillation (MED), and reverse osmosis (RO) desalination. For each process, it details the seawater intake, discharge of brine containing additives, physical properties of the brine, and types of biocides, antiscalants, antifoaming agents, and corrosion inhibitors added. The document also discusses receiving coastal environments for brine discharge and options for brine disposal, including deepwell injection, evaporation ponds, and zero liquid discharge.Properties of Ammonia
Properties of AmmoniaBrandon Hardwicke
油
Ammonia is a colorless gas with a sharp, irritating odor. It exists as a gas at room temperature but can also be a liquid or solid depending on temperature and pressure. Ammonia has a molecular mass of 17.03 g/mol and is made up of one nitrogen atom bonded to three hydrogen atoms in a triangular pyramid shape. Ammonia is a weak base that readily dissolves in water and is highly reactive, acting as a strong reducing agent in chemical reactions. Common physical and chemical properties of ammonia are described.Topic 7 Concept Electrolysis
Topic 7 Concept Electrolysisfalkirkvtc
油
The document describes the electrolysis of a copper chloride solution using a voltage of 6V. During the process, chlorine gas is produced at one electrode while solid copper forms at the other electrode, as electrons are involved in the transfer of copper and chlorine between electrode reactions. Key reactions include the formation of chlorine gas at the anode from chloride ions and copper metal at the cathode from copper ions gaining electrons.Introduction to electrolysis(older)
Introduction to electrolysis(older)Laura Ortega
油
This document provides definitions and explanations related to electrolysis. It defines key terms like electrolyte, electrode, anode, and cathode. It explains that electrolysis involves the decomposition of ionic compounds through the movement of ions when a current is passed. Molten salts and those dissolved in solutions conduct electricity because the ions are free to move. Simple experiments are described to demonstrate electrolysis, including the electrolysis of molten lead(II) bromide. Equations are given for the reactions at the anode and cathode.Electrolysis
Electrolysislisa14hazel
油
Electrolysis is the decomposition of a substance by an electric current, where electrolytes carry current as ions in solution. During electrolysis, ions move to the electrodes and undergo oxidation or reduction reactions. At the cathode, electrons are gained and reduction occurs. At the anode, electrons are lost and oxidation occurs. The amount of substance deposited or gas produced can be calculated using Faraday's law, relating current, time, and moles of electrons in the electrode reactions.Final ppt on water fuelled cars
Final ppt on water fuelled carsShantanu Chaudhary
油
A water-fuelled car is hypothetical car that uses water as fuel by producing hydrogen and oxygen on board through electrolysis without external energy input. The document discusses several claims of individuals having created functioning water-fuelled cars using technologies like electrolysis, hydrogen boosters, and water to gas systems. However, the scientific community has not approved an actual water-fuelled car due to failures in violating thermodynamic laws or fully demonstrating the technologies. While more development is still needed, hydrogen boosters and water to gas systems may have potential future for enhancing fuel efficiency and reducing emissions without requiring engine modifications.IGCSE Electricity
IGCSE ElectricityCarole Paquette
油
The document provides information about electrolysis, including:
1) Electrolysis is the chemical effect of electricity on ionic compounds, causing them to break up into simpler substances like elements.
2) During electrolysis, ions move to electrodes of opposite charge where chemical reactions occur - non-metals form at the anode and metals or hydrogen form at the cathode.
3) Examples of electrolysis include molten lead(II) bromide producing lead at the cathode and bromine at the anode, and aqueous copper(II) chloride producing copper at the cathode and chlorine at the anode.Oxides
OxidessYhira
油
This document discusses different types of oxides based on their reactions with water and acids or bases. It defines acidic, basic, amphoteric, and neutral oxides. Acidic oxides react with water to form acids, while basic oxides react with acids to form salts and water. Amphoteric oxides can behave as either acidic or basic oxides depending on the reaction. Neutral oxides show no acidic or basic properties and are insoluble in water. The document provides examples of common oxides that fall into each category and an decision tree for classifying an unknown oxide based on its solubility properties.Similar to Harsh mangla (20)
Energy conversion and Storage.pptx
Energy conversion and Storage.pptxBishnupadMohanty1
油
This document discusses the use of metal nanostructures for energy conversion and storage applications. It begins with an introduction on the importance of renewable energy resources like solar, wind and water due to depletion of fossil fuels. It then discusses electrolysis of water for hydrogen production and its use as a clean fuel in fuel cells. The document outlines energy conversion through hydrogen evolution reaction and oxygen evolution reaction during water electrolysis. It also discusses electrical energy storage in batteries and supercapacitors, with the advantages and disadvantages of each. Finally, it describes different types of nanomaterials that can be used for energy applications due to their large surface area and interface dominated properties.Green Hydrogen for Fuel Furnaces and Fertilizers by Prem Baboo.pdf
Green Hydrogen for Fuel Furnaces and Fertilizers by Prem Baboo.pdfPremBaboo4
油
Green hydrogen is a hope for the future. Green hydrogen is a pollution-free fuel that can be used to transport fertilizers and as a fuel in furnace. Although hydrogen is being used a lot in the world, yet we still have to do a lot more. whenever someone is good The electrolyser and Proton Exchange Membrane) Electrolyzer units, by electrolysis of water using renewable power are the popular. Nowadays the old primary reformer is being modified with electrified for green urea production. Right now we are feeling a bit strange but one day such a thing will come when we will not even get to see the smoke. change always happens slowly and should happen. Today we need green hydrogen on a large scale. Recently the pudimadaka green hydrogen Hub aim to create a world class ecosystem for technologies in the new energy paradigm such as electrolyser and fuel cell manufacturing related ancillary industries and start up incubation testing facilities production and export Green Hydrogen also other derivatives such as green Ammonia and green methanol. Also it is great fuel for future having great Calorific value of Hydrogen is 1,50,000 kJ / kg more than others fuel. 1 kg of hydrogen contains 33.33 kWh of usable energy, whereas petrol and diesel only hold about 12 kWh/kg. We swear that one day there will be hydrogen filling stations everywhere in the world, it won't happen so soon but it will definitely happen one day because in the future there will be nothing left except water because how long will these non-renewable sources last one day the end of everything is certain. We will have only two options, electricity and water. Generate electricity from renewable sources and generate hydrogen from water. Apart from this, there is nothing else to think about.
HYDROGEN : HYDROGEN production, electolysis,photoelectrolysis
HYDROGEN : HYDROGEN production, electolysis,photoelectrolysisbrijsharma3371
油
This is all about HYDROGEN that you want to know, everything related to its production and many more. Hydrogen fuel cell
Hydrogen fuel cellRutikRathod
油
1. Hydrogen fuel cells produce clean energy through an electrochemical reaction between hydrogen and oxygen that results in electricity, heat, and water.
2. Hydrogen is stored and fed to the anode where it is split into protons and electrons, the protons pass through the electrolyte while the electrons power an external circuit.
3. At the cathode, oxygen and the protons react to form water, completing the circuit and reaction.Electrosynthesis
ElectrosynthesisKrishnaprasad Arumugam
油
This document discusses electrosynthesis, which is the synthesis of chemical compounds in an electrochemical cell. It provides details on experimental setup, types of reactions like anodic oxidations and cathodic reductions, and applications to inorganic compound synthesis and organic compound synthesis. It also discusses energy storage using electrosynthesis, including advantages and applications of redox flow batteries for large-scale energy storage.Hydrogen Production ppt.pptx
Hydrogen Production ppt.pptxMdHelalHossain6
油
The document discusses several methods for producing hydrogen through water splitting, including:
- Steam reforming of methane, the most common current method.
- Electrolysis, where an electric current splits water into hydrogen and oxygen. More efficient variations include steam electrolysis and thermochemical electrolysis.
- Photochemical and photobiological systems use sunlight to drive the water splitting reaction.
- Thermal water splitting uses very high temperatures of around 1000属C.
- Gasification and biomass conversion also produce hydrogen from other feedstocks.
Low current electrolysis is discussed as a more efficient method, similar to the water splitting that occurs in photosynthesis. Producing hydrogen directly from water without electrolysis is also mentioned. OverallDirect energy conversion (PV Cell, Fuel Cell)
Direct energy conversion (PV Cell, Fuel Cell)Ashish Bandewar
油
Direct Energy Conversion :- Photo voltage cells: Principle, concept of energy conversion, conversion efficiency, power output and performance, storage, Fuel Cells : Principles types of fuel cells, conversion efficiencydirectenergyconversionsss.pdf
directenergyconversionsss.pdfAkramMohammad28
油
This document discusses direct energy conversion through photovoltaic cells and fuel cells. It provides details on:
1) How photovoltaic cells convert solar energy into electrical energy through a module of approximately 30 cells producing around 15V and 1.5A of current. Applications include water pumping, commercial and residential power, and consumer electronics.
2) What fuel cells are, how they convert hydrogen and oxygen into water and electricity through electrochemical reactions. Types are classified by temperature and electrolyte used, with hydrogen-oxygen and fossil fuel cells discussed in detail.
3) Advantages of fuel cells include high efficiency and low emissions, while disadvantages include higher costs and difficulties with hydrogen production and storage.Isde 6
Isde 6Alexander Decker
油
The International Institute for Science, Technology and Education (IISTE) , International Journals Call for papaers: http://www.iiste.org/JournalsHydrogen fuel cells
Hydrogen fuel cellsguest0c2139
油
The document provides an overview of hydrogen fuel cells, including their history, types, basic functioning, and connections to electrochemistry, thermodynamics, the environment, and potential applications as an energy source. It discusses how hydrogen fuel cells work through redox reactions at the anode and cathode to produce electricity from hydrogen and oxygen, and are more efficient than combustion engines due to their electrochemical rather than combustion process. It also notes that hydrogen fuel cells can be powered through renewable energy sources like electrolysis of water using solar or hydro power.Electrolytic Hydrogen A Future Technology Of Energy Storage
Electrolytic Hydrogen A Future Technology Of Energy StorageAdhyayDeshmukh
油
This document is a seminar report on electrolytic hydrogen as a future energy storage technology. It provides an overview of electrolytic hydrogen production through water electrolysis and hydrogen energy storage systems. It discusses the types of electrolyzers used, including alkaline, solid oxide, and polymer electrolyte membrane electrolyzers. It also covers the need for energy storage in modern power systems, such as for load levelling, peak shaving, and integrating renewable energy sources. The document evaluates the pros and cons of electrolytic hydrogen production and its potential economic benefits compared to conventional energy storage technologies.Hydrogen energy
Hydrogen energyHiren Mahida
油
Hydrogen has the highest energy content by mass of any fuel and can be used as a substitute for hydrocarbons. It has a non-polluting burning process. There are several methods for producing hydrogen, including electrolysis of water, thermo-chemical processes, and from fossil fuels. Electrolysis uses electricity to split water into hydrogen and oxygen gases. Filter press electrolyzers are most widely used due to their ability to operate at high current densities and production rates. There are challenges to storing hydrogen including its low density and challenges maintaining it as a liquid. Storage methods include high pressure gas, liquid storage using cryogenics, underground storage, and chemically storing it in metal hydrides.hydrolysis for energy storage
hydrolysis for energy storageFalak Shah
油
This document discusses various techniques for storing electrical energy, including batteries, compressed air, flywheels, pumped water, and hydrogen storage. It focuses on using hydrogen produced by hydrolysis as an energy storage method. When excess energy is generated, it is used to produce hydrogen through electrolysis. During energy deficits, the stored hydrogen is reconverted to electricity through fuel cells. The document outlines the benefits of hydrogen storage such as high energy density and lack of carbon emissions, as well as safety testing procedures.
際際滷 nhi棚n li畛u s畉ch
際際滷 nhi棚n li畛u s畉chPh畉m Tu畉n
油
Hydrogen can be produced through various processes including steam methane reforming, partial oxidation, coal gasification, water electrolysis, and photolysis. Steam methane reforming is the most efficient current method using natural gas as a feedstock. It involves catalytic reforming of methane with steam at high temperatures. Partial oxidation and coal gasification are other thermal processes that can use diverse carbon-containing feedstocks to produce hydrogen and carbon monoxide through partial combustion reactions. Water electrolysis involves passing an electric current through water to dissociate it into hydrogen and oxygen gas. Alkaline electrolysis is a mature technology while PEM electrolysis offers advantages like easier construction and higher purity products. Photolysis uses solar energy to split water directly into hydrogenHydrogen fuel cell
Hydrogen fuel cellPurvesh Shinde
油
this is the report on Hydrogen Fuel cell. which is the future of vehicles & probably future of electric vehicles.
Hydrogen Fuel cell is the one part or type of fuel cell.
here is the working, advantages, disadvantages of fuel cell vehicles.
as well as there are list of popular fuel cell vehicles recently launched.
23-03-2020
Zero point energy
Zero point energyRai Saheb Bhanwar Singh College Nasrullaganj
油
This document discusses using zero-point energy to power "water fuel" vehicles. It explains that pulsing electrolyzers can create charged water gas clusters that may couple to zero-point energy in a similar way as plasma through cavity quantum electrodynamics. The goal is to develop closed-loop self-running systems that produce gas from water alone using this energy source to minimize external power needs.Fuel cells
Fuel cellsArvind Singh Heer
油
This document provides an overview of fuel cells, including their construction, working, types, advantages, disadvantages, and applications. It describes how a fuel cell works by converting chemical energy from hydrogen into electrical energy through an electrochemical reaction with oxygen. The main types of fuel cells covered are alkaline fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, and solid oxide fuel cells. The advantages include high efficiency, zero emissions, and quiet operation. Disadvantages include the high cost of the technology and fuel production. Applications mentioned include power generation, transportation, portable electronics, and backup power supplies.Harsh mangla
- 1. NAME = HARSH MANGLA CLASS = X B ROLL . NO = 11 SUBJECT = SCIENCE TOPIC = ELECTROLYSIS OF WATER RAWAL INTERNATIONAL SCHOOL
- 2. Energy can neither be created or destroyed, it can only be changed from one form to another Albert Einstein
- 4. How do we store electricity? Through chemistry battery hydrogen
- 5. Why is Hydrogen such a big deal? Energy Density (Mega Joules per kilogram) Li-ion Battery 0.54 Gasoline 46.9 Hydrogen 120.0 ~ 220 times more energy than batteries ~ 2.6 times more energy than gasoline NO AVAILABLE SOURCE OF HYDROGEN
- 6. Electrolysis of Water H2 and O2
- 7. What do we need? Water Electrolyte (PEM, salt water, citric acid) Metal electrodes (Anode +, Cathode -) Electricity
- 8. Chemical what Happens 2H2O O2+4H++4e- 4H++4e-2H2 2H2O O2+2H2
- 9. What is a PEM PEM Proton Exchange Membrane Used as fuel cells to produce electricity Must use deionized water Can be run backwards as an electrolyses
- 12. How do we use the Hydrogen? Fuel Cells (electrolyzer in reverse) Run on H2 and O2 to form clean water. Water can then be recycled to electrolyzer.
- 13. Setup PEM electrolyzer(s). Produce efficiency curves of PEM using simple circuitry. Determine Hydrogen Generation Rate vs. Power input. Build our own electrolyzer powered by our Solar Cells
- 15. Design a Power Plant Electricity!!!
- 16. Solar Cells
- 17. THANK YOU