Highly Efficient CO2 Reduction at Steady 2 A cm-2 by Surface Reconstruction of Silver Penetration Electrode
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作者
Li, Shoujie; Dong, Xiao; Mao, Jianing; Chen, Wei; Chen, Aohui; Wu, Gangfeng; Zhu, Chang; Li, Guihua; Wei, Yiheng; Liu, Xiaohu; Wang, Jiangjiang; Song, Yanfang; Wei, Wei
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刊物名称
SMALL
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年、卷、文献号
2023, 19, 1613-6829
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关键词
Li, Shoujie; Dong, Xiao; Mao, Jianing; Chen, Wei; Chen, Aohui; Wu, Gangfeng; Zhu, Chang; Li, Guihua; Wei, Yiheng; Liu, Xiaohu; Wang, Jiangjiang; Song, Yanfang; Wei, Wei
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摘要
Electroreduction of CO2 to CO is a promising route for greenhouse gas resource utilization, but it still suffers from impractical current density and poor durability. Here, a nanosheet shell (NS) vertically standing on the Ag hollow fiber (NS@Ag HF) surface formed by electrochemical surface reconstruction is reported. As-prepared NS@Ag HF as a gas penetration electrode exhibited a high CO faradaic efficiency of 97% at an ultra-high current density of 2.0 A cm(-2) with a sustained performance for continuous >200 h operation. The experimental and theoretical studies reveal that promoted surface electronic structures of NS@Ag HF by the nanosheets not only suppress the competitive hydrogen evolution reaction but also facilitate the CO2 reduction kinetics. This work provides a feasible strategy for fabricating robust catalysts for highly efficient and stable CO2 reduction.
