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Efficient CO2 electroreduction to CO at low overpotentials using a surface-reconstructed and N-coordinated Zn electrocatalyst.
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-04-20 , DOI: 10.1039/d0dt00800a
Wanan Deng 1 , Shixiong Min , Fang Wang , Zhengguo Zhang , Chao Kong
Affiliation  

In this work, an effective vapor ammonization-electroreduction strategy is developed to fabricate a surface-reconstructed and N-coordinated Zn electrocatalyst (Zn-N), which exhibits high electrocatalytic activity and stability for CO2 reduction to CO with a faradaic efficiency (FE) of 85.6% and a CO partial current density of 11.2 mA cm-2 at -0.91 V vs. reversible hydrogen electrode (RHE), greatly outperforming Zn foil and surface-reconstructed Zn (Zn-H). Moreover, Zn-N also maintains good selectivity for CO production during the long-term CO2 electrolysis.

中文翻译:

使用表面重构和N配位的Zn电催化剂在低超电势下将CO2高效电还原为CO。

在这项工作中,开发了一种有效的蒸气氨化-电还原策略,以制造表面重构和N配位的Zn电催化剂(Zn-N),该催化剂表现出高的电催化活性,并具有以法拉第效率(FE)还原CO2到CO的稳定性。与可逆氢电极(RHE)相比,在-0.91 V时,其具有85.6%的电导率和11.2 mA cm-2的CO分流密度,大大优于Zn箔和表面重构的Zn(Zn-H)。此外,在长期的CO2电解过程中,Zn-N对CO的生产也保持良好的选择性。
更新日期:2020-04-03
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