Synergistic Fe-Ni dual-atom sites on hollow carbon enabling high-performance rechargeable zinc-air batteries.

ABSTRACT: The advancement of rechargeable zinc-air batteries (ZABs) hinges critically on the development of efficient and durable bifunctional oxygen electrocatalysts. Herein, we report an atomically dispersed Fe-Ni bifunctional catalyst loaded on a hollow carbon framework (FeNi-hCN) through a density difference-assisted strategy. This unique architecture, leveraging the synergistic interplay between Fe and Ni atoms and the advantageous properties of the hollow carbon support, endows the catalyst with exceptional bifunctional oxygen electrocatalytic activity: a half-wave potential (E _1/2) of 0.91 V for the oxygen reduction reaction (ORR) and overpotential of only 330 mV at 10 mA cm^-2 for the oxygen evolution reaction (OER). Remarkably, the catalyst demonstrates outstandi

SUBMITTER: Wang Y 

PROVIDER: S-EPMC12670757 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature