Engineering Fe-N₄ Electronic Structure with Adjacent Co-N₂C₂ and Co Nanoclusters on Carbon Nanotubes for Efficient Oxygen Electrocatalysis.

ABSTRACT: Regulating the local configuration of atomically dispersed transition-metal atom catalysts is the key to oxygen electrocatalysis performance enhancement. Unlike the previously reported single-atom or dual-atom configurations, we designed a new type of binary-atom catalyst, through engineering Fe-N₄ electronic structure with adjacent Co-N₂C₂ and nitrogen-coordinated Co nanoclusters, as oxygen electrocatalysts. The resultant optimized electronic structure of the Fe-N₄ active center favors the binding capability of intermediates and enhances oxygen reduction reaction (ORR) activity in both alkaline and acid conditions. In addition, anchoring M-N-C atomic sites on highly graphitized carbon supports guarantees of efficient charge- and mass-transports,

SUBMITTER: Wu M 

PROVIDER: S-EPMC10589168 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature