Enhancement of hydrogen evolution activity on Pt-skin/Pt3Co [(111), (100), and (110)] single crystal electrodes

Autor: S. Kobayashi, D.A. Tryk, H. Uchida
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Electrochemistry Communications, Vol 110, Iss , Pp - (2020)
Druh dokumentu: article
ISSN: 1388-2481
DOI: 10.1016/j.elecom.2019.106615
Popis: We have examined for the first time the hydrogen evolution reaction (HER) activity at the (111), (100), and (110) faces of well-defined Pt-skin/Pt3Co single crystal electrodes in H2-saturated 0.1 M HClO4 solution in order to clarify the mechanism for the increased HER activities at Pt-skin/Pt-M (M = Co, Fe) nanoparticles dispersed on a carbon support, which we recently developed as highly active cathode catalysts for proton exchange membrane electrolyte water electrolysis. The HER current densities at −0.02 V vs. RHE for the Pt-skin/Pt3Co single crystal rotating disk electrodes increased in the order (100)
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