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. 2022 Nov 10;123(5):2311–2348. doi: 10.1021/acs.chemrev.2c00429

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© 2022 The Authors. Published by American Chemical Society

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(a) Comparison of typical voltage–current characteristics of the alkaline (black), PEM (red), and AEM (blue) water electrolyzers in a two-electrode configuration. (b) Summary of the cell components and testing conditions. Adapted from refs (93) and (94).