Clean Synthesis of Bismuth Porous Nanosheets for Efficient CO2 Electroreduction

Bismuth porous nanosheets (Bi PNSs) were synthesized via a three-step process in the absence of any surfactants and templates. As a catalyst for electrochemical CO2 electroreduction, Bi PNSs show high selectivity to formic acid with the maximum Faraday efficiency of 95.31% and maintain more than 80%...

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Published in:ACS applied energy materials 2022-09, Vol.5 (9), p.11561-11567
Main Authors: Bai, Yi-Ming, Cheng, Chuan-Qi, Shi, Zi-Zheng, Hu, Xin-Zhuo, Yan, Si-Wei, Zhang, Ze-Yu, Yang, Jing, Shen, Gu-Rong, Yin, Peng-Fei, Dong, Cun-Ku, Liu, Hui, Du, Xi-Wen
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container_title ACS applied energy materials
container_volume 5
creator Bai, Yi-Ming
Cheng, Chuan-Qi
Shi, Zi-Zheng
Hu, Xin-Zhuo
Yan, Si-Wei
Zhang, Ze-Yu
Yang, Jing
Shen, Gu-Rong
Yin, Peng-Fei
Dong, Cun-Ku
Liu, Hui
Du, Xi-Wen
description Bismuth porous nanosheets (Bi PNSs) were synthesized via a three-step process in the absence of any surfactants and templates. As a catalyst for electrochemical CO2 electroreduction, Bi PNSs show high selectivity to formic acid with the maximum Faraday efficiency of 95.31% and maintain more than 80% Faraday efficiency over a wide voltage range of 1100 mV. The excellent performance of Bi PNSs was found to originate from the abundant kink sites on the pore walls, which have appropriate affinity to intermediates and reduce the energy barriers for CO2 electroreduction. Our work demonstrates that a clean synthetic route is advantageous to the growth of a unique nanostructure that possesses high catalytic activity.
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