Insights into catalyst degradation during alkaline water electrolysis under variable operation

Authors: Raul A. Marquez, Jay T. Bender, Ashton M. Aleman, Emma Kalokowski, Thuy Vy Le, Chloe L. Williamson, Morten Linding Frederiksen, Kenta Kawashima, Chikaodili E. Chukwuneke, Andrei Dolocan, Delia J. Milliron, Joaquin Resasco, Thomas F. Jaramillo, C. Buddie Mullins

Published: 2025-06-12

DOI: 10.1039/d5ee02194d

Source: Full article

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Abstract

Variable operation causes severe degradation of Ni, Fe, and Co catalysts in liquid alkaline water electrolysis. This work reveals insights into catalyst transformations induced by reverse currents and offers guidelines to improve stability testing.