Specialty metals for water electrolysis

Are iridium and platinum critical materials?

Hydrogen will have a crucial role to play in transforming the energy market. The first element of the periodic table has great potential to decarbonize much of the steel, cement and chemical industries as well as aviation, heavy-duty road haulage and maritime transportation. As a result, politicians across the EU are mapping out plans to support electrolyzer capacity increases and hydrogen production methods.

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H2 Production by Water Electrolysis – Trends

NEL
Alkaline electrolyzer at Akzo Nobel, © NEL

Splitting water into hydrogen and oxygen with the help of electrical energy is commonly known as water electrolysis. This process matches the oxyhydrogen experiments one may remember from the classroom, albeit in reverse. If the anode and cathode in an electrolyzer cell are separated by a semipermeable membrane or a diaphragm, the gases produced by the process can be directed out of the cell individually.

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