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

Title:

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

Document Type and Number:

WIPO Patent Application WO/2023/162716

Kind Code:

A1

Abstract:

A negative electrode active material for a non-aqueous electrolyte secondary battery according to one example of an embodiment comprises composite particles (30) that include a lithium aluminate phase (31) and a silicon phase (32) dispersed in the lithium aluminate phase (31). The lithium aluminate phase (31) contains boron, and the ratio (MAI/MB) of the aluminum percentage content (MAI) and the boron percentage content (MB) with respect to the total amount of the elements other than oxygen constituting the lithium aluminate phase (31) and the silicon phase (32) is 1.0-30.0, inclusive.

Inventors:

JIN TAKUYA
ASANO TAISUKE

Application Number:

PCT/JP2023/004519

Publication Date:

August 31, 2023

Filing Date:

February 10, 2023

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Assignee:

PANASONIC IP MAN CO LTD (JP)

International Classes:

H01M4/38; H01M4/36

Domestic Patent References:

WO2017199606A1	2017-11-23
WO2016035290A1	2016-03-10

Foreign References:

JP2013197012A

2013-09-30

Attorney, Agent or Firm:

YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)

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