Double-catalytic-site engineering of nickel-based electrocatalysts by group VB metals doping coupling with in-situ cathodic activation for hydrogen evolution

By Shang, Xiao; Zhang, Xin-Yu; Xie, Jing-Yi; Dong, Bin; Chi, Jing-Qi; Guo, Bao-Yu; Yang, Min; Chai, Yong-Ming; Liu, Chen-Guang
Published in Applied Catalysis B: Environmental 2019

Abstract

The hydrogen evolution reaction (HER) in alkaline media is limited by poor-proton environment with the water dissociation step. Herein, we report a double-catalytic-site construction strategy for nickel-based materials (e.g., sulfides, selenides, phosphides and oxides) for HER, utilizing group VB metals (V, Nb or Ta) doping coupled with the subsequent in-situ cathodic activation (ICA). For V-doped nickel sulfide, ICA creates Ni

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