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Patent Searching and Data


Title:
POSITIVE ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/153397
Kind Code:
A1
Abstract:
The present invention uses a positive electrode for a secondary battery, the positive electrode comprising a positive electrode current collector and a positive electrode mixture layer that is provided on the surface of the positive electrode current collector and that includes a positive electrode active material. The positive electrode mixture layer contains a first positive electrode active material having a compression strength of 400 MPa or greater and a second positive electrode active material having a compression strength of 250 MPa or less. When the positive electrode mixture layer is divided into a first region and a second region that have the same thickness with each other, the first positive electrode active material is included more in the first region than in the second region, and the second positive electrode active material is included more in the second region than in the first region.

Inventors:
YAMAMOTO RINA
UKA YOUICHIROU
Application Number:
PCT/JP2021/001959
Publication Date:
August 05, 2021
Filing Date:
January 21, 2021
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/02; H01M4/13; H01M4/36; H01M10/052; H01M10/0566
Domestic Patent References:
WO2005020354A12005-03-03
WO2019044205A12019-03-07
WO2017057078A12017-04-06
WO2019026629A12019-02-07
WO2019097951A12019-05-23
Foreign References:
JP2014143063A2014-08-07
JP2016058309A2016-04-21
Other References:
JOURNAL OF THE MINING AND METALLURGICAL INSTITUTE OF JAPAN, vol. 81, December 1965 (1965-12-01), pages 1024 - 1030
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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