Orbital coupling of hetero-diatomic nickel-iron site for bifunctional electrocatalysis of CO₂ reduction and oxygen evolution.

ABSTRACT: While inheriting the exceptional merits of single atom catalysts, diatomic site catalysts (DASCs) utilize two adjacent atomic metal species for their complementary functionalities and synergistic actions. Herein, a DASC consisting of nickel-iron hetero-diatomic pairs anchored on nitrogen-doped graphene is synthesized. It exhibits extraordinary electrocatalytic activities and stability for both CO₂ reduction reaction (CO₂RR) and oxygen evolution reaction (OER). Furthermore, the rechargeable Zn-CO₂ battery equipped with such bifunctional catalyst shows high Faradaic efficiency and outstanding rechargeability. The in-depth experimental and theoretical analyses reveal the orbital coupling between the catalytic iron center and the adjacent nickel atom, which lea

SUBMITTER: Zeng Z 

PROVIDER: S-EPMC8253796 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature