隔膜导热性对电池安全性能的影响

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中图分类号：U465 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250249

The Effect of Thermal Conductivity of Separator on Safety PerformanceofBatteries

Chang Chen'，Deng Wenwen²，Liu Dandan'，Xiong Fen'，Li Jingliang' （1.DongfengMotorCorporationResearch&DevelopmentInstitute，Wuhan43058;2.LantuAutomotiveTechnologyCo.，Ltd， Wuhan 430051）

Abstract：To improve the internal temperature environment of power batteriesinnewenergyvehiclesand enhancebattery safety，AramidNanofibers （ANF）arecomposited with ZnO nanosheet-coated AlOmicrospheres （Al2O3@ZnO⋅ ），followed bysuction filtrationand hot-pressing，toobtainan ANF/AlO3@ZnO composite separator withhighthermal stabilityandhigh thermalconductivity.TheANF，whichexhibitsexcellentheatresistance， ensures the morphological integrity of the composite separator at temperatures exceeding 200C . The ZnO coating bridgesadjacent Al2O3 microspheres，constructing a continuous thermal conduction network.This structure raises the thermal conductivity of the ANF/Al2O3@ZnO composite separator to 1.04W/m⋅K .Batteries employing this separatormaintain highspecificcapacity，lowdecay，and excelentcyclingstabilityevenunder harsh temperature conditions.

Keywords：Separator，Thermal conductivity，Safetyperformance，AramidNanofiber（ANF）

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电状态的目标。（剩余9437字）