Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING SAME, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/230993
Kind Code:
A1
Abstract:
The disclosed negative electrode active material for a non-aqueous electrolyte secondary battery includes active material particles containing silicon, and a surface layer formed on the surface of the active material particles. The surface layer includes a reaction product obtained as a result of a compound being reacted so as to form a siloxane bond. The compound includes a structure represented by Si-R1-Si.
R1 is an atomic group having a chain part that includes, as constituent elements, an alkylene group and at least one substance selected from the group consisting of sulfur atoms, oxygen atoms, and nitrogen atoms. At least one atomic group selected from the group consisting of C1-C6 alkoxy groups and the like is bonded to each of the two Si.
Inventors:
SHIBATA SHO
SUZUKI HIROTETSU
SAKATA MOTOHIRO
SUZUKI HIROTETSU
SAKATA MOTOHIRO
Application Number:
PCT/JP2022/019359
Publication Date:
November 03, 2022
Filing Date:
April 28, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
C01B33/32; C07F7/18; H01M4/36; H01M4/38; H01M4/58; H01M4/587
Domestic Patent References:
| WO2011013851A1 | 2011-02-03 |
Foreign References:
| JP2015050188A | 2015-03-16 | |||
| JP2020138895A | 2020-09-03 | |||
| JP2003160328A | 2003-06-03 | |||
| JP2014150068A | 2014-08-21 |
Other References:
IONICS, vol. 24, 2018, pages 3691 - 3698
Attorney, Agent or Firm:
KAWASAKI & PARTNERS (JP)
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