Electronic modulation of Fe–N4 sites by second-shell sulfur for enhanced oxygen reduction electrocatalysis

Abstract

Atomically dispersed Fe single-atom catalysts are engineered with S as a second-shell environmental modulator rather than a direct ligand. This configuration delivers superior ORR activity and excellent zinc-air battery performance, while resolving a long-standing controversy over the coordination role of S.

Supplementary files

Article information

Article type
Communication
Submitted
05 May 2026
Accepted
08 Jun 2026
First published
08 Jun 2026

Chem. Commun., 2026, Accepted Manuscript

Electronic modulation of Fe–N4 sites by second-shell sulfur for enhanced oxygen reduction electrocatalysis

J. Wu, X. Chen, J. Hu, D. Qian and J. Liu, Chem. Commun., 2026, Accepted Manuscript , DOI: 10.1039/D6CC02788A

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