Title:
SECONDARY BATTERY POSITIVE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2021/240194
Kind Code:
A1
Abstract:
[Problem] To provide a positive electrode constituting an all-solid-state battery such as an all-solid-state lithium ion secondary battery, wherein a means capable of suppressing the cracking of particles of a positive electrode active material due to pressing pressure during the production of an electrode, and effectively preventing a decrease in battery capacity is provided. [Solution] Provided is a secondary battery positive electrode comprising a positive electrode active material layer including: a positive electrode active material composed of secondary particles; and a solid electrolyte, wherein the average particle diameter of the secondary particles is at most 4.9 μm, the average particle diameter of primary particles constituting the secondary particles is at least 1.2 μm, and the average particle diameter of primary particles of the solid electrolyte is at most 0.8 μm.
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Inventors:
SAITO NAOTO (JP)
TAKADA HARUMI (JP)
TAKADA HARUMI (JP)
Application Number:
PCT/IB2020/000525
Publication Date:
December 02, 2021
Filing Date:
May 26, 2020
Export Citation:
Assignee:
NISSAN MOTOR (JP)
RENAULT SAS (FR)
RENAULT SAS (FR)
International Classes:
H01M4/36; H01M4/505; H01M4/525; H01M4/58; H01M10/052; H01M10/0562
Foreign References:
| JP2013097892A | 2013-05-20 | |||
| JP2014175278A | 2014-09-22 | |||
| JP2019121499A | 2019-07-22 | |||
| JP2016062683A | 2016-04-25 | |||
| JP2019160571A | 2019-09-19 | |||
| JP6574222B2 | 2019-09-11 | |||
| JP5702289B2 | 2015-04-15 |
Other References:
SOLID STATE IONICS, vol. 345, February 2020 (2020-02-01), pages 115200
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 165, no. 5, 2018, pages 1038 - A1045
See also references of EP 4160736A4
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 165, no. 5, 2018, pages 1038 - A1045
See also references of EP 4160736A4
Attorney, Agent or Firm:
HATTA & ASSOCIATES et al. (JP)
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