Hydrogen production by low-temperature electrolysis
The Green Hydrogen Production by Water Electrolysis
Article REF: AF3691 V1
Hydrogen production by low-temperature electrolysis
The Green Hydrogen Production by Water Electrolysis

Authors : Johnny DESCHAMPS, Laurent CATOIRE

Publication date: October 10, 2025 | Lire en français

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2. Hydrogen production by low-temperature electrolysis

2.1 Alkaline electrolysis

The alkaline electrolyzer, whose basic cell is shown schematically in Figure 1 , consists of two electrodes (anode and cathode), a diaphragm, and an electrolyte. This technology uses a liquid electrolyte, usually an aqueous solution of potassium hydroxide (KOH), whose mass concentration varies with temperature.

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