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Enhancing the Alkaline Hydrogen Evolution Reaction Activity through the Bifunctionality of Ni(OH)2/Metal Catalysts

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  • This work was supported by the Office of Science, Office of Basic Energy Sciences, Division of Materials Science, U.S. Department of Energy, under contract number DE-AC0-06CH11357. N.D. would like to thank the Chemical Sciences and Engineering Division at Argonne National Laboratory for funding.

Abstract

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Active in alkaline environment: The activity of nickel, silver, and copper catalysts for the electrochemical transformation of water to molecular hydrogen in alkaline solutions was enhanced by modification of the metal surfaces by Ni(OH)2 (see picture; I=current density and η=overpotential). The hydrogen evolution reaction rate on a Ni electrode modified by Ni(OH)2 nanoclusters is about four times higher than on a bare Ni surface.

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