Metallic W/WO₂ solid-acid catalyst boosts hydrogen evolution reaction in alkaline electrolyte.

ABSTRACT: The lack of available protons severely lowers the activity of alkaline hydrogen evolution reaction process than that in acids, which can be efficiently accelerated by tuning the coverage and chemical environment of protons on catalyst surface. However, the cycling of active sites by proton transfer is largely dependent on the utilization of noble metal catalysts because of the appealing electronic interaction between noble metal atoms and protons. Herein, an all-non-noble W/WO₂ metallic heterostructure serving as an efficient solid-acid catalyst exhibits remarkable hydrogen evolution reaction performance with an ultra-low overpotential of -35 mV at -10 mA/cm² and a small Tafel slope (-34 mV/dec), as well as long-term durability of hydrogen production (>50 h) at curren

SUBMITTER: Chen Z 

PROVIDER: S-EPMC10475068 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature