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Rich Bismuth‐Oxygen Bonds in Bismuth Derivatives from Bi 2 S 3 Pre‐Catalysts Promote the Electrochemical Reduction of CO 2
Author(s) -
Wang Yating,
Cheng Ling,
Liu Jinze,
Xiao Chuqian,
Zhang Bei,
Xiong Qionghao,
Zhang Tao,
Jiang Zilong,
Jiang Hao,
Zhu Yihua,
Li Yuhang,
Li Chunzhong
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202000656
Subject(s) - formate , bismuth , electrocatalyst , catalysis , faraday efficiency , electrochemistry , inorganic chemistry , materials science , oxide , reversible hydrogen electrode , chemistry , electrode , working electrode , organic chemistry , metallurgy
The greenhouse effect and climate change caused by carbon dioxide (CO 2 ) have become global challenges. Electrochemical reduction is one of the most promising paths to convert CO 2 into a feedstock such as formate for the synthesis of value‐added chemicals and fuels. We first performed theoretical calculations to predict the activity of bismuth oxide (Bi 2 O 3 ) for CO 2 electroreduction. The analysis of the reaction energetics indicates that the increased number of Bi−O bonds lowers the formation energy of the key *OCHO intermediate, and thus improves the production of formate. The Bi/Bi 2 O 3 electrocatalyst rich in Bi−O bonds was experimentally prepared from a nanorod‐like Bi 2 S 3 pre‐catalyst, which shows electrocatalytic activity to generate formate with a Faradaic efficiency of over 80 % at −1.0 V vs. the reversible hydrogen electrode (RHE) and durability for more than 20 h. This research opens up avenues for the rational design of selective Bi‐based CO 2 ‐to‐formate electrocatalysts.