Enhanced Electrocatalytic Water Oxidation of Ultrathin Porous Co₃O₄ Nanosheets by Physically Mixing with Au Nanoparticles.

ABSTRACT: Ultrathin porous Co₃O₄ nanosheets are synthesized successfully, the thickness of which is about three unit-cell dimensions. The enhanced oxygen evolution reaction (OER) performance and electronic interaction between Co₃O₄ and Au is firstly reported in Co₃O₄ ultrathin porous nanosheets by physically mixing with Au nanoparticles. With the loading of the Au nanoparticles, the current density of ultrathin porous Co₃O₄ nanosheets is enhanced from 9.97 to 14.76 mA cm^-2 at an overpotential of 0.5 V, and the overpotential required for 10 mA cm^-2 decreases from 0.51 to 0.46 V, smaller than that of commercial IrO₂ (0.54 V). Furthermore, a smaller Tafel slope and excellent durabili

SUBMITTER: Hu C 

PROVIDER: S-EPMC9785958 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature