期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 26, 期 61, 页码 13779-13782出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202002198
关键词
metal-organic frameworks; ferroelectric switch; lithium-sulfur batteries; polysulfides confinement; shuttle effects
资金
- NSFC of China [21771035, 21671034]
Ferroelectricity has an excellent reversible polarization conversion behavior under an external electric field. Herein, we propose an interesting strategy to alleviate the shuttle effect of lithium-sulfur battery by utilizing ferroelectric metal-organic framework (FMOF) as a host material for the first time. Compared to other MOF with same structure but without ferroelectricity and commercial carbon black, the cathode based on FMOF exhibits a low capacity decay and high cycling stability. These results demonstrate that the polarization switching behaviors of FMOF under the discharge voltage of lithium-sulfur battery can effectively trap polysulfides by polar-polar interactions, decrease polysulfides shuttle and improve the electrochemical performance of lithium-sulfur battery.
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