POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Title:

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2021/065859

Kind Code:

A1

Abstract:

A positive electrode active material for nonaqueous electrolyte secondary batteries according to the present invention comprises: a lithium transition metal composite oxide which has a spinel structure; and a coating layer which is provided on the surface of the lithium transition metal composite oxide, while having a spinel structure, and which contains Li but does not contain Mn.

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Inventors:

KAWADA HIROSHI
HIBINO MITSUHIRO

Application Number:

PCT/JP2020/036799

Publication Date:

April 08, 2021

Filing Date:

September 29, 2020

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Assignee:

PANASONIC IP MAN CO LTD (JP)

International Classes:

H01M4/36; H01M4/505; H01M4/525

Domestic Patent References:

WO2012043566A1

2012-04-05

Foreign References:

JP2016031852A	2016-03-07
JP2016081822A	2016-05-16
JP2018120705A	2018-08-02
JPH11191416A	1999-07-13
JP2017033817A	2017-02-09
JP2013149433A	2013-08-01
JP2012234818A	2012-11-29
JP2008535173A	2008-08-28

Other References:

WANG AI-MIN, BAI NI: "Improved electrochemical cycling performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode materials by coating with spinel MgAl2O4", SOLID STATE IONICS, vol. 336, 1 August 2019 (2019-08-01), NL , pages 19 - 25, XP009535080, ISSN: 0167-2738, DOI: 10.1016/j.ssi.2019.03.013
WU, Q. ET AL.: "Enhanced cyclic stability at elevated temperature of spinel LiNi0.5Mn1.5O4 by Li4Ti5O12 coating as cathode material for high voltage lithium ion batteries", CERAMICS INTERNATIONAL, vol. 45, 27 November 2018 (2018-11-27), pages 5072 - 5079, XP055799114, DOI: 10.1016/j.ceramint.2018.11.209
See also references of EP 4040535A4

Attorney, Agent or Firm:

KAMATA Kenji et al. (JP)

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