刻面
法拉第效率
电化学
铜
催化作用
材料科学
碳纤维
电解
电催化剂
吸附
化学工程
氢氧化物
无机化学
化学
冶金
电极
结晶学
物理化学
电解质
生物化学
复合材料
复合数
工程类
作者
Kaili Yao,Jun Li,Adnan Ozden,Haibin Wang,Ning Sun,Pengyu Liu,Wen Zhong,Wei Zhou,Jieshu Zhou,Xi Wang,Hanqi Liu,Yongchang Liu,Songhua Chen,Yongfeng Hu,Ziyun Wang,David Sinton,Hongyan Liang
标识
DOI:10.1038/s41467-024-45538-y
摘要
Abstract The copper (Cu)-catalyzed electrochemical CO 2 reduction provides a route for the synthesis of multicarbon (C 2+ ) products. However, the thermodynamically favorable Cu surface (i.e. Cu(111)) energetically favors single-carbon production, leading to low energy efficiency and low production rates for C 2+ products. Here we introduce in situ copper faceting from electrochemical reduction to enable preferential exposure of Cu(100) facets. During the precatalyst evolution, a phosphate ligand slows the reduction of Cu and assists the generation and co-adsorption of CO and hydroxide ions, steering the surface reconstruction to Cu (100). The resulting Cu catalyst enables current densities of > 500 mA cm −2 and Faradaic efficiencies of >83% towards C 2+ products from both CO 2 reduction and CO reduction. When run at 500 mA cm −2 for 150 hours, the catalyst maintains a 37% full-cell energy efficiency and a 95% single-pass carbon efficiency throughout.
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