Green hydrogen is primarily produced through a process called electrolysis.
The main ingredient used for electrolysis is water, which is made up of two elements: hydrogen and oxygen.
During electrolysis, an electric current is passed through the water, causing the water molecules to split into hydrogen (H2) and oxygen (O2) gases.
Electrolysis takes place inside a device called an electrolyzer, which consists of two electrodes—a positively charged anode and a negatively charged cathode—immersed in water.
When the electric current flows through the water, the negatively charged electrode (cathode) attracts positive ions (protons), while the positively charged electrode (anode) attracts negative ions (electrons).
At the cathode, protons gain electrons and combine to form hydrogen gas (H2).
At the anode, oxygen gas (O2) is produced as a byproduct of the electrolysis process.
To ensure the process is green and sustainable, the electricity used for electrolysis should come from renewable energy sources such as solar or wind power.
This helps minimize carbon emissions and reliance on fossil fuels.
Green hydrogen is distinguished from gray hydrogen, which is produced using fossil fuels and releases carbon dioxide as a byproduct.
Green hydrogen, on the other hand, has no carbon emissions and offers a clean energy alternative.
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