Mitigating thermal runaway of lithium-ion battery by using thermally sensitive polymer blend as cathode binder
نویسندگان
چکیده
Thermally sensitive binder (TSB) is developed as an internal safety mechanism of lithium-ion battery (LIB). The TSB is a polymer blend of poly(vinylidene fluoride) (PVDF) and poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP). Compared with regular PVDF binder, the softening and swelling of TSB are more pronounced when temperature is above 110 8C. With the TSB, the cycling performance of LIB cell is not affected; upon nail penetration, the heat generation rate is significantly reduced. The crystallinity of TSB is an important factor. This technology may lead to the development of thermal-runaway-mitigating LIB cells. VC 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45737.
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Effects of macromolecular configuration of thermally sensitive binder in lithium-ion battery
In order to suppress heat generation of nail-penetrated lithium-ion battery (LIB) cell, thermally sensitive binders (TSB) based on poly(vinylidenefluoride) (PVDF) and poly(vinylidenefluoride-co-hexafluoropropylene) (PVDF-HFP) were investigated. The testing data showed that with appropriate treatment, TSB could efficiently reduce the peak temperature associated with internal shorting, and did no...
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