The Ratio of sp² and sp³ Hybridized Carbon Determines the Performance of Carbon-based Catalysts in H₂O₂ Electrosynthesis from O₂.

ABSTRACT: Introducing oxygen- or carbon-containing functional groups is a widely adopted strategy to optimize the performance of carbon-based catalysts for the two-electron oxygen reduction reaction (2 e^- ORR). Nevertheless, the specific contributions of these functional groups to enhance activity and selectivity are not well-defined and continue under debate. In this study, we systematically modified carbon materials by controlling the contents of oxygen functional groups (OFGs) and carbon functional groups (CFGs). Surface compositions were accurately quantified using X-ray photoelectron spectroscopy, and 2 e^- ORR performance was evaluated using a rotating ring-disk electrode (RRDE) in 0.1 M KOH. Through reliable statistical analyses, including partial least squares regression

SUBMITTER: Zhu D 

PROVIDER: S-EPMC12001155 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature