Inducing Fe 3d Electron Delocalization and Spin-State Transition of FeN₄ Species Boosts Oxygen Reduction Reaction for Wearable Zinc-Air Battery.

ABSTRACT: Transition metal-nitrogen-carbon materials (M-N-Cs), particularly Fe-N-Cs, have been found to be electroactive for accelerating oxygen reduction reaction (ORR) kinetics. Although substantial efforts have been devoted to design Fe-N-Cs with increased active species content, surface area, and electronic conductivity, their performance is still far from satisfactory. Hitherto, there is limited research about regulation on the electronic spin states of Fe centers for Fe-N-Cs electrocatalysts to improve their catalytic performance. Here, we introduce Ti₃C₂ MXene with sulfur terminals to regulate the electronic configuration of FeN₄ species and dramatically enhance catalytic activity toward ORR. The MXene with sulfur terminals induce the spin-state transition of

SUBMITTER: Chen S 

PROVIDER: S-EPMC9918713 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature