Construction of hierarchical CoP@Ni₂P core-shell nanoarrays for efficient electrocatalytic hydrogen evolution in alkaline solution.

ABSTRACT: Design and synthesis of non-noble electrocatalyst with controlled structure and composition for hydrogen evolution reaction (HER) are significant for large-scale water electrolysis. Here, an elegant multi-step templating strategy is developed for the fabrication of vertically aligned CoP@Ni₂P nanowire-nanosheet architecture on Ni foam. Cobalt-carbonate hydroxides nanowires grown on Ni foam are first synthesized as the self-template. Afterward, a layer of amorphous Ni(OH)₂ nanosheets is grown on the Co-based precursors through a chemical bath process, which is then transformed into the hierarchical CoP@Ni₂P nanoarrays by a co-phosphatization treatment. Owing to the synergistic effect of the compositions and the advantages of the hierarchical heterostructures

SUBMITTER: Jin H 

PROVIDER: S-EPMC9034185 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature