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1. (WO2018040911) BATTERY SEPARATOR AND LITHIUM ION BATTERY AND PREPARATION METHOD OF SAME

Pub. No.:    WO/2018/040911    International Application No.:    PCT/CN2017/097563
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Aug 16 01:59:59 CEST 2017
IPC: H01M 2/14
Applicants: BYD COMPANY LIMITED
比亚迪股份有限公司
Inventors: JIN, Lina
金丽娜
SHAN, Jun
单军
HU, Gang
胡刚
HE, Long
何龙
Title: BATTERY SEPARATOR AND LITHIUM ION BATTERY AND PREPARATION METHOD OF SAME
Abstract:
The present disclosure relates to the field of lithium ion batteries, and wherein a battery separator and a lithium ion battery and a preparation method of the same are disclosed. The battery separator comprises a porous base membrane and an adhesive layer attached on at least one side surface of the porous base membrane, the adhesive layer containing an acrylate crosslinked polymer and a styrene-acrylate crosslinked copolymer and/or a vinylidene fluoride-hexafluoropropylene copolymer, and having a porosity of 40-65%.