Developing a Cobalt Phosphide Catalyst with Combined Cobalt Defects and Phosphorus Vacancies to Boost Oxygen Evolution Reaction.

ABSTRACT: Defect engineering, by adjusting the surface charge and active sites of CoP catalysts, significantly enhances the efficiency of the oxygen evolution reaction (OER). We have developed a new Co_1-xP_v catalyst that has both cobalt defects and phosphorus vacancies, demonstrating excellent OER performance. Under both basic and acidic media, the catalyst incurs a modest overvoltage, with 238 mV and 249 mV needed, respectively, to attain a current density of 10 mA cm^-2. In the practical test of alkaline electrocatalytic water splitting (EWS), the Co_1-xP_v || Pt/C EWS shows a low cell voltage of 1.51 V and superior performance compared to the noble metal-based EWS (RuO₂ || Pt/C, 1.66 V). This catalyst's exceptional catalytic efficienc

SUBMITTER: Ou W 

PROVIDER: S-EPMC11433320 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature