Design of a Single‐Atom Indium<sup>δ+</sup>–N<sub>4</sub>Interface for Efficient Electroreduction of CO<sub>2</sub>to Formate
Huishan Shang, Tao Wang, Jiajing Pei, Zhuoli Jiang, Danni Zhou, Yu Wang, Haijing Li, Juncai Dong, Zhongbin Zhuang, Wenxing Chen, Dingsheng Wang, Jiatao Zhang, Yadong Li
Abstract
Abstract Main‐group element indium (In) is a promising electrocatalyst which triggers CO 2 reduction to formate, while the high overpotential and low Faradaic efficiency (FE) hinder its practical application. Herein, we rationally design a new In single‐atom catalyst containing exclusive isolated In δ+ –N 4 atomic interface sites for CO 2 electroreduction to formate with high efficiency. This catalyst exhibits an extremely large turnover frequency (TOF) up to 12500 h −1 at −0.95 V versus the reversible hydrogen electrode (RHE), with a FE for formate of 96 % and current density of 8.87 mA cm −2 at low potential of −0.65 V versus RHE. Our findings present a feasible strategy for the accurate regulation of main‐group indium catalysts for CO 2 reduction at atomic scale.