COMPOSITE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, LITHIUM BATTERY AND ELECTRONIC DEVICE

WIPO Patent Application WO/2023/041063

A1

The present application discloses a composite electrode material, a preparation method therefor, a lithium battery, and an electronic device. The composite electrode material comprises an electrode material core and a coated organic fiber framework, where -CO-NH- or -C=N- contained in the organic fibers can form abundant hydrogen bonds with -OH on the surface of the electrode material core such that the organic fibers are interwovenly compounded on the surface of the electrode material core, thereby forming a firm organic fiber framework on the surface of the electrode material core. The high strength and the small tensile strain of the organic fiber framework can limit the volume expansion of the electrode material, and at the same time it is ensured that plastic deformation is not easy to occur. Further, the cycle stability of the battery can be improved, the proportion of the battery in the internal cavity of the electronic device is reduced, the cavity space available for key components such as chips and circuit boards in the electronic device is improved, problems such as battery bulge and back cover getting warped after a long cycle are avoided, and the service life and the safety of the electronic product are improved.

SHA YUJING (CN)
XIA SHENGAN (CN)
XIE FENGCHAO (CN)
LI YANGXING (CN)

PCT/CN2022/119412

March 23, 2023

September 16, 2022

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HUAWEI TECH CO LTD (CN)

H01M4/62

CN112310356A	2021-02-02
CN109103441A	2018-12-28
CN106025176A	2016-10-12
CN111916745A	2020-11-10
JP2012248367A	2012-12-13

CHINABLE IP (CN)

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