Atomically Dispersed Fe-N₄ Modified with Precisely Located S for Highly Efficient Oxygen Reduction.

ABSTRACT: Immobilizing metal atoms by multiple nitrogen atoms has triggered exceptional catalytic activity toward many critical electrochemical reactions due to their merits of highly unsaturated coordination and strong metal-substrate interaction. Herein, atomically dispersed Fe-NC material with precise sulfur modification to Fe periphery (termed as Fe-NSC) was synthesized, X-ray absorption near edge structure analysis confirmed the central Fe atom being stabilized in a specific configuration of Fe(N₃)(N-C-S). By enabling precisely localized S doping, the electronic structure of Fe-N₄ moiety could be mediated, leading to the beneficial adjustment of absorption/desorption properties of reactant/intermediate on Fe center. Density functional theory simulation suggested that more

SUBMITTER: Jia Y 

PROVIDER: S-EPMC7770948 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature