electrolyzer

American  

[ih-lek-truh-lahy-zer] / ɪˈlɛk trəˌlaɪ zər /

especially British, electrolyser

noun

1. a system or device that uses electricity to split water molecules into hydrogen and oxygen, thereby producing hydrogen gas as a sustainable source of clean energy.

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Etymology

Origin of electrolyzer

First recorded in 1890–95; electrolyze ( def. ) + -er ¹ ( def. )

Example Sentences

Shares jumped 26% on Wednesday after the company said it delivered External link its first 10-megawatt GenEco electrolyzer array to Galp External link, a Portuguese energy company.

From Barron's • Oct. 6, 2025

By using electricity to split water into its two elements, the device, a test model called an electrolyzer, produces hydrogen, a carbon-free gas that could help power mills like the one in Duisburg.

From New York Times • Apr. 30, 2024

The industry is working on production alternatives, including carbon capture and storage from the burning of methane, or quitting methane altogether to make green hydrogen, using an electrolyzer to split water’s hydrogen and oxygen.

From Los Angeles Times • Apr. 24, 2024

Using this technique, the team was able to discover high-performance water electrolyzer electrode materials free of platinum-group elements -- substances previously thought to be indispensable in water electrolysis.

From Science Daily • Mar. 2, 2024

The apparatus consists of a hermetically closed electrolyzer, A, into the lower part of which enters the electrodes, E and F, of any electrical machine whatever.

From Scientific American Supplement, No. 401, September 8, 1883 by Various