CN114641890A - 一种隔膜及包括该隔膜的高电压电池 - Google Patents

一种隔膜及包括该隔膜的高电压电池 Download PDF

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CN114641890A
CN114641890A CN202080077087.6A CN202080077087A CN114641890A CN 114641890 A CN114641890 A CN 114641890A CN 202080077087 A CN202080077087 A CN 202080077087A CN 114641890 A CN114641890 A CN 114641890A
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parts
mass
ceramic particles
core
layer
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张祖来
李素丽
李俊义
徐延铭
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Zhuhai Cosmx Battery Co Ltd
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Zhuhai Cosmx Battery Co Ltd
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Abstract

一种隔膜及包括该隔膜的高电压电池。通过在无机陶瓷颗粒表面包覆一层改性层，所述改性层可以吸附电极材料析出的过渡金属离子，从而避免过渡金属离子在负极表面形成过渡金属析出物，提高电池的安全性、倍率性能和循环性能。同时，由于所述改性层是包覆在无机陶瓷颗粒表面的，因此并不会对电池的内阻产生明显的影响，从而不会降低电池的倍率、低温和循环性能。改性材料的引入还可以实现对电池体系中产生的微量的HF的吸附，一方面可以抑制过渡金属离子的溶出，稳定正极表面结构，改善电池性能；另一方面可以降低HF对电池外包材料的腐蚀，改善电池安全性能。

Description

PCT国内申请，说明书已公开。

Claims (10)

  1. PCT国内申请，权利要求书已公开。
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