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Electronic Materials

Electrolyzers: The tools to turn hydrogen green

The low-carbon hydrogen dreams of governments and corporations depend on the massive scale-up of this technology

by Craig Bettenhausen
July 2, 2023 | A version of this story appeared in Volume 101, Issue 21
A stack of giant disks sits on its side in a factory. A person in personal protective equipment inspects it from the side.

Credit: McPhy | Alkaline electrolyzers like this one made by McPhy Energy currently boast the largest installed capacities. But other technologies are in hot pursuit.

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