A dendrite-blocking polyimide-meta-aramid separator with ultrahigh strength and thermostability for high-security lithium-ion battery

Xiaogang Li,Kefan Liu,Nanxi Dong,Bingxue Liu,Guofeng Tian,Shengli Qi,Dezhen Wu

Chemical Engineering Journal（2024）

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摘要

•PI-MA nanofiber with core–shell structure is fabricated.•PI-MA separator has good wettability, thermostability and high ionic conductivity.•PI-MA separator displays high capacity retention ratio after 300 cycles.•Cell assembled with PI-MA separator has great safety at high temperature.

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关键词

Polyimide,Dendrite-blocking separator,Lithium-ion battery,Thermostability,Battery safety

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