期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 141, 期 43, 页码 17081-17085出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b09298
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资金
- King Abdulaziz City for Science and Technology (Center of Excellence for Nanomaterials and Clean Energy Applications)
- Fundacion Ramon Areces
- Swiss National Science Foundation
- Advanced Light Source, Lawrence Berkeley National Laboratory
- IBS Global Postdoctoral Fellowship [IBS-R026-D1]
The synthesis of a new anionic 3D metal-catecholate framework, termed MOF-1992, is achieved by linking tetratopic cobalt phthalocyanin-2,3,9,10,16,17,23,24-octaol linkers with Fe-3(-C2O2-)(6)(OH2)(2) trimers into an extended framework of roc topology. MOF-1992 exhibits sterically accessible Co active sites together with charge transfer properties. Cathodes based on MOF-1992 and carbon black (CB) display a high coverage of electroactive sites (270 nmol cm(-2)) and a high current density (-16.5 mA cm(-2); overpotential, -0.52 V) for the CO2 to CO reduction reaction in water (faradaic efficiency, 80%). Over the 6 h experiment, MOF-1992/CB cathodes reach turnover numbers of 5800 with turnover frequencies of 0.20 s(-1) per active site.
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