Premium
Design of Binary Cu–Fe Sites Coordinated with Nitrogen Dispersed in the Porous Carbon for Synergistic CO 2 Electroreduction
Author(s) -
Yun Ruirui,
Zhan Feiyang,
Wang Xinjian,
Zhang Beibei,
Sheng Tian,
Xin Zhifeng,
Mao Junjie,
Liu Shoujie,
Zheng Baishu
Publication year - 2021
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202006951
Subject(s) - bimetallic strip , selectivity , catalysis , faraday efficiency , materials science , electrochemistry , carbon fibers , electrolysis , synergistic catalysis , adsorption , metal , nitrogen , inorganic chemistry , chemical engineering , chemistry , electrode , metallurgy , electrolyte , organic chemistry , composite material , composite number , engineering
To relieve the green gas emission and involve the carbon neutral cycle, electrochemical reduction of CO 2 attracts more and more attention. Herein, a biatomic site catalyst of Cu–Fe coordinated with the nitrogen, which is doped in the carbon matrix (denoted as Cu–Fe–N 6 –C), is designed. The as‐obtained Cu–Fe–N 6 –C exhibits higher performance than that of Cu–N–C and Fe–N–C, owing to bimetallic sites, proving synergistic functions based on different molecules and their interfaces. Cu–Fe–N 6 –C shows high selectivity toward CO, with high Faradaic efficiency (98% at −0.7 V), and maintaining 98% of its initial selectivity after 10 h electrolysis. The experimental results and theoretical calculations reveal that the synergistic catalysis of different metallic sites enlarges the adsorption enthalpy of CO 2 , reducing the activation energy result in generating high selectivity, activity, stability, and low impedance.