甲酸
纳米复合材料
法拉第效率
格式化
铋
可逆氢电极
选择性
无机化学
化学
材料科学
电催化剂
纳米技术
化学工程
催化作用
电化学
有机化学
工作电极
电极
物理化学
冶金
工程类
作者
Lin Li,Xiaoyang He,Xia‐Guang Zhang,Wenchao Ma,Biao Zhang,Di‐Ye Wei,Shunji Xie,Qinghong Zhang,Xiaodong Yi,Ye Wang
标识
DOI:10.1002/ange.202214959
摘要
Abstract The renewable‐electricity‐driven CO 2 reduction to formic acid would contribute to establishing a carbon‐neutral society. The current catalyst suffers from limited activity and stability under high selectivity and the ambiguous nature of active sites. Herein, we report a powerful Bi 2 S 3 ‐derived catalyst that demonstrates a current density of 2.0 A cm −2 with a formate Faradaic efficiency of 93 % at −0.95 V versus the reversible hydrogen electrode. The energy conversion efficiency and single‐pass yield of formate reach 80 % and 67 %, respectively, and the durability reaches 100 h at an industrial‐relevant current density. Pure formic acid with a concentration of 3.5 mol L −1 has been produced continuously. Our operando spectroscopic and theoretical studies reveal the dynamic evolution of the catalyst into a nanocomposite composed of Bi 0 clusters and Bi 2 O 2 CO 3 nanosheets and the pivotal role of Bi 0 −Bi 2 O 2 CO 3 interface in CO 2 activation and conversion.
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