Engineering O-O formation on dual-atom Fe-Mo catalysts for oxygen electrocatalysis.

ABSTRACT: Although single-atom Fe-N-C catalysts exhibit outstanding oxygen reduction reaction (ORR) activity, their stability presents challenges due to the oxidation and destruction of Fe-N _x active sites by Fenton-like reactions, severely restricting their application in energy storage and conversion technologies. Here, we construct a dual-atom oxygen electrocatalyst (FeMo/NC) with FeMoN₇ active sites, which demonstrates excellent bifunctional oxygen electrocatalysis performance. The FeMo/NC-based zinc-air battery (ZAB) can operate continuously for over 200 h without significant activity decay, making it superior to the Fe/NC-based ZAB. In situ X-ray absorption spectroscopy (XAS) and Raman characterizations reveal the formation of the *Fe-O-O-Mo* intermediate wi

SUBMITTER: Qi L 

PROVIDER: S-EPMC12603803 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature