Journal
CHEMICAL COMMUNICATIONS
Volume 57, Issue 71, Pages 8937-8940Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc03431f
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Funding
- NSFC [21871141, 21871142, 22071109, 92061101]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Foundation of Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
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A series of Li-CO2 battery cathode materials based on metal-organic frameworks with dual-metal sites have been reported, showing that Mn-coordinated pyrazole site promotes effective decomposition of Li2CO3, while Mn-metalloporphyrin site contributes to the activation of CO2. This study reveals natural catalytic sites for CO2 reduction/evolution reactions in Li-CO2 batteries using a crystalline cathode material with a well-defined structure under aprotic conditions.
A series of Li-CO2 battery cathode materials are reported based on metal-organic frameworks with dual-metal sites containing a metalloporphyrin and a metal-coordinated pyrazole. MnTPzP-Mn demonstrates a low voltage hysteresis of 1.05 V at 100 mA g(-1 )and good stability of 90 cycles at 200 mA g(-1). Among them, the Mn-coordinated pyrazole site can promote the effective decomposition of Li2CO3, and the Mn-metalloporphyrin site contributes to the activation of CO2. This is the first example of using a crystalline cathode material with a well-defined structure to reveal natural catalytic sites for CO2 reduction/evolution reactions under aprotic conditions in Li-CO2 batteries.
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