Hollow metal organic framework-mediated in-situ architecture of copper dendrites for enhanced CO2 electroreduction

Angewandte Chemie
Qinggong ZhuBuxing Han

Abstract

Electrocatalytic CO 2 reduction to a single product at high current densities and efficiencies remains a challenge. However, the conventional electrode preparation methods, such as drop-casting, usually suffer from low intrinsic activity. Herein, we report a synthesis strategy for preparing heterogeneous electrocatalyst composed of 3D hierarchical Cu dendrites that derived from the in-situ electrosynthesized hollow Cu-metal organic framework (MOF), which took only 5min for the preparation of the Cu-MOF film. The synthesis strategy preferentially exposes increasing active sites, which favours for the reduction of CO 2 to formate. The current density could be as high as 102.1 mA cm -2 with a selectivity of 98.3% in ionic-liquid based electrolyte and a commonly used H-type cell.

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Citations

Feb 25, 2021·Chemical Society Reviews·Genxiang WangLiming Dai
Mar 6, 2021·Nature Communications·Wenhao RenChuan Zhao

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