期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 23, 页码 8896-8901出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202001216
关键词
CO2; electroreduction; formate; metal-organic frameworks (MOFs); ionic liquid
资金
- Beijing Municipal Science & Technology Commission [Z191100007219009] Funding Source: Medline
- Chinese Academy of Sciences [QYZDY-SSW-SLH013] Funding Source: Medline
- National Natural Science Foundation of China [21773267, 21533011, 21733011] Funding Source: Medline
- National Natural Science Fundation of China [21890761] Funding Source: Medline
- National Key Research and Development Program of China [2017YFA0403102] Funding Source: Medline
Electrocatalytic reduction of CO2 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 an in situ electrosynthesized hollow copper metal-organic framework (MOF), for which the preparation of the Cu-MOF film took only 5 min. The synthesis strategy preferentially exposes active sites, which favor's the reduction of CO2 to formate. The current density could be as high as 102.1 mA cm(-2) with a selectivity of 98.2 % in ionic-liquid-based electrolyte and a commonly used H-type cell.
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