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Turning copper into an efficient and stable CO evolution catalyst beyond noble metals

Chemistry

Turning copper into an efficient and stable CO evolution catalyst beyond noble metals

J. Xue, X. Dong, et al.

Experience the groundbreaking study by Jing Xue and colleagues, demonstrating a trimetallic single-atom alloy catalyst that achieves 100% CO selectivity for converting CO2 to CO with impressive stability and efficiency. This innovative research challenges traditional reliance on noble metals, paving the way for sustainable energy solutions.

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Playback language: English
Abstract
Electrochemical reduction of CO2 (CO2RR) to CO using renewable electricity offers a sustainable route for producing a versatile intermediate. This study demonstrates that a trimetallic single-atom alloy catalyst (Cu92Sb5Pd3) efficiently converts CO2 into CO with 100% (±1.5%) CO selectivity at -402 mA cm⁻² and high activity up to -1 A cm⁻² in a neutral electrolyte. It exhibits long-term stability (528 h) at -100 mA cm⁻² with a Faradaic efficiency (FE) for CO above 95%. Operando spectroscopy and theoretical simulations reveal synergistic effects of Sb and Pd single atoms in modifying Cu's electronic structure, favoring CO production and suppressing hydrogen evolution, while enhancing catalyst stability. This challenges the dominance of noble metals in large-scale CO2-to-CO conversion.
Publisher
Nature Communications
Published On
Jul 17, 2024
Authors
Jing Xue, Xue Dong, Chunxiao Liu, Jiawei Li, Yizhou Dai, Weiqing Xue, Laihao Luo, Yuan Ji, Xiao Zhang, Xu Li, Qiu Jiang, Tingting Zheng, Jianping Xiao, Chuan Xia
Tags
CO2 reduction
single-atom alloy
catalyst
CO selectivity
Faradaic efficiency
sustainability
renewable energy
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