Electrolysers and importance in green hydrogen production

Electrolysers: Through a process called electrolysis, electrolysers use electricity to divide water into hydrogen and oxygen. They are essential to the creation of green hydrogen, which is hydrogen produced with the use of renewable energy sources like solar, wind, or hydro power in an environmentally friendly manner.

Types of Electrolysers

  • Alkaline Electrolysers:
Oldest and most mature technology.
Uses an alkaline electrolyte, usually potassium hydroxide (KOH) or sodium hydroxide (NaOH).
Relatively low cost and stable operation.

  • Proton Exchange Membrane (PEM) Electrolysers:
Uses a solid polymer electrolyte.
Higher efficiency and faster start-up times compared to alkaline electrolysers.
Can operate at higher current densities and produce high-purity hydrogen.

  • Solid Oxide Electrolysers (SOE):
Operate at high temperatures (700-1,000°C).
Uses a solid oxide or ceramic electrolyte.
High efficiency due to the utilization of both electrical and thermal energy.

Importance in Green Hydrogen Production

1. Renewable Energy Integration: Electrolysers can convert surplus electricity from renewable sources into hydrogen, effectively storing energy that can be used when renewable generation is low.

2.Decarbonization: Green hydrogen production via electrolysis produces zero greenhouse gas emissions, contributing to the reduction of carbon footprints in industries like transportation, power generation, and manufacturing.

3. Energy Security and Storage: Hydrogen produced by electrolysers can be stored and transported, providing a reliable energy source and improving energy security.

4. Industrial Applications: Green hydrogen can be used as a feedstock in various industrial processes, such as ammonia production for fertilizers and refining processes, reducing reliance on fossil fuels.

5. Fuel Cells: Hydrogen produced through electrolysis can be used in fuel cells to generate electricity, providing a clean energy source for vehicles, portable power units, and stationary power generation.

In conclusion, electrolysers are essential to the process of producing green hydrogen and are a key component in the shift to a low-carbon, sustainable energy system. 

Comments

Post a Comment

Popular posts from this blog

Types of Hydrogens (H2)

  Being the most plentiful, lightest, and first element in the periodic table, hydrogen is gaining popularity as a clean energy source for a sustainable future.   Hydrogen is classified into different types based on the production methods.   Green Hydrogen   Ø   Green hydrogen is generated by electrolyzing water utilizing clean power produced by renewable energy sources like solar or wind. Ø   Water is broken down by an electrochemical reaction into its component elements, hydrogen and oxygen, with no carbon dioxide being produced. Ø   Because green hydrogen makes up a relatively small portion of all hydrogen produced, its generation costs are significant. Cost of the green hydrogen is 3.5-5.5USD/Kg H2 2.       Blue Hydrogen Ø   Using a process named steam reforming, which involves mixing natural gas with heated water to create steam, blue hydrogen is created from natural gas. Ø     Although hydrogen is formed as a result, carbon dioxide is also created as a byprodu
Read more

Computer languages

  Computer Languages Q: How do you think we communicate with a computer?   Ans: Ø   A computer cannot understand any commands that you may give in English or in any other language.   Ø   It has its own set of instructions for communication, or what we call computer languages.   Ø     The user of a computer must be able to communicate with it. He must be able to give the computer commands and understand the output that the computer generates.   Ø     This is possible due to the invention of computer languages. Ø Ø   Basically, there are two main categories of computer languages, namely Ø Ø 1. Low Level Languages   2. High Level Languages   1.        Low Level Languages Low level languages are the basic computer instructions or better known as machine codes. A computer cannot understand any instruction given to it by the user in English or any other high level language. These low level languages are very easily understandable by the machine
Read more

Why MXenes are important?

Importance of MXenes MXenes are distinguished among the plethora of existing 2D materials due to their provision of 2D sheets exhibiting metallic electrical conductance, a characteristic that was predominantly absent in the array of 2D materials, the majority of which are semiconductors, semimetals, or dielectrics.   MXenes present conductivity values that have been documented to reach up to 20,000 S/cm , higher mechanical strength and rigidity in comparison to alternative solution-processed 2D materials.   MXenes have  capacity for scalable solution syntheses in kilogram quantities, adequate environmental durability for a wide range of applications, compatibility with biological systems, and the ability for aqueous solution processing without the need for surfactants. One could perceive them as being hydrophilic, capable of being dispersed in water, 2D metals or electrically conductive clay.   There is a multitude of MXenes currently accessible, with the potential for an immensely v
Read more