Title:
POSITIVE ELECTRODE PLATE, SECONDARY BATTERY, ELECTRONIC DEVICE, AND MOBILE EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2023/197946
Kind Code:
A1
Abstract:
Embodiments of the present application provide a positive electrode plate, a secondary battery, an electronic device, and mobile equipment. The positive electrode plate comprises a positive electrode current collector, and a first positive electrode coating and a second positive electrode coating which are sequentially stacked on at least one side surface of the positive electrode current collector; the first positive electrode coating comprises a first positive electrode active material, a first binder and a first conductive agent; the second positive electrode coating comprises a second positive electrode active material, a second binder and a second conductive agent; the thickness of the first positive electrode coating is less than or equal to the second positive electrode coating, the tensile stress or shear stress of the first positive electrode coating is greater than that of the second positive electrode coating, and the energy density of the first positive electrode active material is greater than or equal to the second positive electrode active material. The secondary battery prepared by using the positive electrode plate can effectively solve the problem of thermal runaway caused by the positive electrode current collector of the battery being in contact with the negative electrode, without affecting the energy density of the battery.
Inventors:
LI ZHIXIAN (CN)
TIAN LEILEI (CN)
XIE FENGCHAO (CN)
TIAN LEILEI (CN)
XIE FENGCHAO (CN)
Application Number:
PCT/CN2023/086843
Publication Date:
October 19, 2023
Filing Date:
April 07, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01M4/1391
Foreign References:
| CN112582581A | 2021-03-30 | |||
| CN112599722A | 2021-04-02 | |||
| KR20190064462A | 2019-06-10 | |||
| CN111916752A | 2020-11-10 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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