双功能
催化作用
电催化剂
析氧
镍
双原子分子
法拉第效率
化学
石墨烯
材料科学
无机化学
光化学
氧化还原
纳米技术
物理化学
电化学
分子
电极
冶金
有机化学
生物化学
作者
Zhiping Zeng,Li Gan,Hong Bin Yang,Xiaozhi Su,Jiajian Gao,Wei Liu,Hiroaki Matsumoto,Jinlong Gong,Junming Zhang,Wei Cai,Zheye Zhang,Yibo Yan,Bin Liu,Peng Chen
标识
DOI:10.1038/s41467-021-24052-5
摘要
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 CO 2 reduction reaction (CO 2 RR) and oxygen evolution reaction (OER). Furthermore, the rechargeable Zn-CO 2 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 leads to alteration in orbital energy level, unique electronic states, higher oxidation state of iron, and weakened binding strength to the reaction intermediates, thus boosted CO 2 RR and OER performance. This work provides critical insights to rational design, working mechanism, and application of hetero-DASCs.
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