Title:
NEGATIVE ELECTRODE FOR SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/042897
Kind Code:
A1
Abstract:
One embodiment of the present invention provides a nonaqueous electrolyte secondary battery (10) wherein a negative electrode (12) has a negative electrode mixture layer (41) which contains a silicon-containing material as a negative electrode active material, with the proportion of the silicon-containing material in the negative electrode active materials being 50% by mass or more. The negative electrode mixture layer (41) has a void fraction of 25% or more; and the value obtained by dividing the volume specific capacity by the void fraction is 40 mAh/cc∙% or less.
Inventors:
SAKATA MOTOHIRO
SATO YOSUKE
OTSUKA MASATO
SATO YOSUKE
OTSUKA MASATO
Application Number:
PCT/JP2023/025656
Publication Date:
February 29, 2024
Filing Date:
July 12, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/134; H01M4/36; H01M4/38; H01M4/587; H01M10/052
Domestic Patent References:
| WO2021153398A1 | 2021-08-05 |
Foreign References:
| JP2019106374A | 2019-06-27 | |||
| JP2018010880A | 2018-01-18 | |||
| JP2009224168A | 2009-10-01 | |||
| JP2008277231A | 2008-11-13 | |||
| JP2017224539A | 2017-12-21 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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