Identification of the Highly Active Co-N₄ Coordination Motif for Selective Oxygen Reduction to Hydrogen Peroxide.

ABSTRACT: Electrosynthesis of hydrogen peroxide (H₂O₂) through oxygen reduction reaction (ORR) is an environment-friendly and sustainable route for obtaining a fundamental product in the chemical industry. Co-N₄ single-atom catalysts (SAC) have sparkled attention for being highly active in both 2e^- ORR, leading to H₂O₂ and 4e^- ORR, in which H₂O is the main product. However, there is still a lack of fundamental insights into the structure-function relationship between CoN₄ and the ORR mechanism over this family of catalysts. Here, by combining theoretical simulation and experiments, we unveil that pyrrole-type CoN₄ (Co-N SAC_Dp) is mainly responsible for the 2e^- ORR, whil

SUBMITTER: Chen S 

PROVIDER: S-EPMC9389578 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature