Unveiling the dynamic active site of defective carbon-based electrocatalysts for hydrogen peroxide production.

ABSTRACT: Active sites identification in metal-free carbon materials is crucial for developing practical electrocatalysts, but resolving precise configuration of active site remains a challenge because of the elusive dynamic structural evolution process during reactions. Here, we reveal the dynamic active site identification process of oxygen modified defective graphene. First, the defect density and types of oxygen groups were precisely manipulated on graphene, combined with electrocatalytic performance evaluation, revealing a previously overlooked positive correlation relationship between the defect density and the 2 e^- oxygen reduction performance. An electrocatalytic-driven oxygen groups redistribution phenomenon was observed, which narrows the scope of potential configurations of the

SUBMITTER: Wu Q 

PROVIDER: S-EPMC10560253 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature