@article{Yang2024, 
author = {Zhongxue Yang and Hongzhi Wang and Xinze Bi and Xiaojie Tan and Yuezhu Zhao and Wenhang Wang and Yecheng Zou and Huaiping Wang and Hui Ning and Mingbo Wu},
title = {Bimetallic In2O3/Bi2O3 Catalysts Enable Highly Selective CO2 Electroreduction to Formate within Ultra-Broad Potential Windows},
year = {2024},
journal = {Energy & Environmental Materials},
volume = {7},
number = {1},
pages = {e12508},
keywords = {bimetallic catalyst, CO2 electrochemical reduction reaction, formate, oxygen vacancy, wide potential window},
url = {https://www.sciopen.com/article/10.1002/eem2.12508},
doi = {10.1002/eem2.12508},
abstract = {CO2 electrochemical reduction reaction (CO2RR) to formate is a hopeful pathway for reducing CO2 and producing high-value chemicals, which needs highly selective catalysts with ultra-broad potential windows to meet the industrial demands. Herein, the nanorod-like bimetallic In2O3/Bi2O3 catalysts were successfully synthesized by pyrolysis of bimetallic InBi-MOF precursors. The abundant oxygen vacancies generated from the lattice mismatch of Bi2O3 and In2O3 reduced the activation energy of CO2 to *CO2·− and improved the selectivity of *CO2·− to formate simultaneously. Meanwhile, the carbon skeleton derived from the pyrolysis of organic framework of InBi-MOF provided a conductive network to accelerate the electrons transmission. The catalyst exhibited an ultra-broad applied potential window of 1200 mV (from −0.4 to −1.6 V vs RHE), relativistic high Faradaic efficiency of formate (99.92%) and satisfactory stability after 30 h. The in situ FT-IR experiment and DFT calculation verified that the abundant oxygen vacancies on the surface of catalysts can easily absorb CO2 molecules, and oxygen vacancy path is dominant pathway. This work provides a convenient method to construct high-performance bimetallic catalysts for the industrial application of CO2RR.}
}