Synergistic Interfacial and Doping Engineering of Heterostructured NiCo(OH)_x-Co_yW as an Efficient Alkaline Hydrogen Evolution Electrocatalyst.

ABSTRACT: To achieve high efficiency of water electrolysis to produce hydrogen (H₂), developing non-noble metal-based catalysts with considerable performance have been considered as a crucial strategy, which is correlated with both the interphase properties and multi-metal synergistic effects. Herein, as a proof of concept, a delicate NiCo(OH)_x-Co_yW catalyst with a bush-like heterostructure was realized via gas-template-assisted electrodeposition, followed by an electrochemical etching-growth process, which ensured a high active area and fast gas release kinetics for a superior hydrogen evolution reaction, with an overpotential of 21 and 139 mV at 10 and 500 mA cm^-2, respectively. Physical and electrochemical analyses demonstrated that the synergistic effe

SUBMITTER: Li R 

PROVIDER: S-EPMC8093358 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature