Efficient CO2 electroreduction on facet-selective copper films with high conversion rate

Nature Communications

Article

Jinyu Guo¹  Geoffrey A. Ozin²  Jia Yu³  Huimin Li³  Huaiyuan Wang³  Tuo Wang³  Hui Gao³  Gong Zhang³  Qingzhen Wang³  Zhi-Jian Zhao³  Dongfang Cheng³  Jinlong Gong⁴ 

[1] Department of Chemical Engineering, Stanford University, Stanford, CA, USA;Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada;School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China;Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, 300072, Tianjin, China;Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China;School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China;Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, 300072, Tianjin, China;Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), 300072, Tianjin, China;Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, 350207, Binhai New City, Fuzhou, China;

关键词: ;   

DOI  :  10.1038/s41467-021-26053-w

 received in 2021-06-03, accepted in 2021-09-06,  发布年份 2021

来源: Springer

【 摘 要 】

Tuning the facet exposure of Cu could promote the multi-carbon (C2+) products formation in electrocatalytic CO2 reduction. Here we report the design and realization of a dynamic deposition-etch-bombardment method for Cu(100) facets control without using capping agents and polymer binders. The synthesized Cu(100)-rich films lead to a high Faradaic efficiency of 86.5% and a full-cell electricity conversion efficiency of 36.5% towards C2+ products in a flow cell. By further scaling up the electrode into a 25 cm2 membrane electrode assembly system, the overall current can ramp up to 12 A while achieving a single-pass yield of 13.2% for C2+ products. An insight into the influence of Cu facets exposure on intermediates is provided by in situ spectroscopic methods supported by theoretical calculations. The collected information will enable the precise design of CO2 reduction reactions to obtain desired products, a step towards future industrial CO2 refineries.

【 授权许可】

CC BY   
© The Author(s) 2021. corrected publication 2023

【 图 表 】

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