Title:
MULTILAYER COMPOSITE SEPARATOR FILM, SECONDARY BATTERY COMPRISING SAME, AND ELECTRICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/142673
Kind Code:
A1
Abstract:
The present application discloses a multi-layer composite separator film, a secondary battery comprising same, and an electrical device. The multi-layer composite separator film comprises a first base material layer and a second base material layer, and the multi-layer composite separator film further comprises a water removal material and an acid removal material; the acid removal material is located between the first base material layer and the second base material layer, and the water removal material is located on the surface of at least one of the first base material layer and the second base material layer. The secondary battery in the present application can achieve both high energy density and a long service life.
Inventors:
ZHANG CUIPING (CN)
HAN CHANGLONG (CN)
FAN PENG (CN)
WU ZELI (CN)
HUANG LEI (CN)
HAN CHANGLONG (CN)
FAN PENG (CN)
WU ZELI (CN)
HUANG LEI (CN)
Application Number:
PCT/CN2022/135796
Publication Date:
August 03, 2023
Filing Date:
December 01, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M50/449; H01M10/0525; H01M10/613; H01M50/46
Foreign References:
| CN101044643A | 2007-09-26 | |||
| CN1567614A | 2005-01-19 | |||
| CN113675531A | 2021-11-19 | |||
| CN106025359A | 2016-10-12 | |||
| TW200501471A | 2005-01-01 | |||
| GB190772016TA | ||||
| GB195872017TA | ||||
| GB228752008TA | ||||
| GB229052008TA | ||||
| GB692086TA |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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