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

Rather than relying on external electronics, converters, or batteries, the electrolyzer adjusts its electrical characteristics through its own thermal and impedance properties.

From Science Daily • Jun. 11, 2026

In a salt water electrolyzer, the HKU team found that the new steel can perform comparably to the titanium based structural materials used in current industrial practice for hydrogen production from desalted seawater or acid.

From Science Daily • May 10, 2026

“Financial targets were maintained, with the focus remaining on execution to scale the electrolyzer and material-handling businesses and to make continued progress toward profitability.”

From Barron's • Nov. 18, 2025

The Vernon facility will use large electrolyzer machines powered by 100% clean energy to split hydrogen from water.

From Los Angeles Times • Aug. 1, 2025

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