铁电性
极化(电化学)
硫黄
电化学
电池(电)
材料科学
锂硫电池
阴极
光电子学
电极
化学
电介质
物理
功率(物理)
冶金
物理化学
量子力学
作者
Fulong Zhu,Yanli Tao,Hongfei Bao,Xuesong Wu,Chao Qin,Xinlong Wang,Zhong‐Min Su
标识
DOI:10.1002/chem.202002198
摘要
Abstract 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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