Electronic-State Modulation of Metallic Co-Assisted Co₇ Fe₃ Alloy Heterostructure for Highly Efficient and Stable Overall Water Splitting.

ABSTRACT: Manipulating electronic structure of alloy-based electrocatalysts can eagerly regulate its catalytic efficiency and corrosion resistance for water splitting and fundamentally understand the catalytic mechanisms for oxygen/hydrogen evolution reactions (OER/HER). Herein, the metallic Co-assisted Co₇ Fe₃ alloy heterojunction (Co₇ Fe₃ /Co) embeds in a 3D honeycomb-like graphitic carbon is purposely constructed as a bifunctional catalyst for overall water splitting. As-marked Co₇ Fe₃ /Co-600 displays the excellent catalytic activities in alkaline media with low overpotentials of 200 mV for OER and 68 mV for HER at 10 mA cm^-2 . Theoretical calculations reveal the electronic redistribution after coupling Co with Co₇

SUBMITTER: Wang X 

PROVIDER: S-EPMC10401179 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature