Site-selective protonation enables efficient carbon monoxide electroreduction to acetate

Xinyue Wang, Yuanjun Chen, Feng Li, Rui Kai Miao, Jianan Erick Huang, Zilin Zhao, Xiao-Yan Li, Roham Dorakhan, Senlin Chu, Jinhong Wu, Sixing Zheng, Weiyan Ni, Dongha Kim, Sungjin Park, Yongxiang Liang, Adnan Ozden, Pengfei Ou, Yang Hou (), David Sinton () and Edward H. Sargent ()
Additional contact information
Xinyue Wang: University of Toronto
Yuanjun Chen: University of Toronto
Feng Li: University of Toronto
Rui Kai Miao: University of Toronto
Jianan Erick Huang: University of Toronto
Zilin Zhao: Zhejiang University
Xiao-Yan Li: University of Toronto
Roham Dorakhan: University of Toronto
Senlin Chu: Zhejiang University
Jinhong Wu: University of Toronto
Sixing Zheng: Zhejiang University
Weiyan Ni: University of Toronto
Dongha Kim: University of Toronto
Sungjin Park: University of Toronto
Yongxiang Liang: University of Toronto
Adnan Ozden: University of Toronto
Pengfei Ou: University of Toronto
Yang Hou: Zhejiang University
David Sinton: University of Toronto
Edward H. Sargent: University of Toronto

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Electrosynthesis of acetate from CO offers the prospect of a low-carbon-intensity route to this valuable chemical––but only once sufficient selectivity, reaction rate and stability are realized. It is a high priority to achieve the protonation of the relevant intermediates in a controlled fashion, and to achieve this while suppressing the competing hydrogen evolution reaction (HER) and while steering multicarbon (C2+) products to a single valuable product––an example of which is acetate. Here we report interface engineering to achieve solid/liquid/gas triple-phase interface regulation, and we find that it leads to site-selective protonation of intermediates and the preferential stabilization of the ketene intermediates: this, we find, leads to improved selectivity and energy efficiency toward acetate. Once we further tune the catalyst composition and also optimize for interfacial water management, we achieve a cadmium-copper catalyst that shows an acetate Faradaic efficiency (FE) of 75% with ultralow HER (

Date: 2024
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DOI: 10.1038/s41467-024-44727-z

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