Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/145630
Kind Code:
A1
Abstract:
The present invention provides a nonaqueous electrolyte secondary battery which has a high capacity and excellent charge and discharge cycle characteristics. With respect to a nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure: a positive electrode active material contains a lithium transition metal composite oxide that is represented by a specific general formula; a negative electrode active material contains 1% by mass or more of a silicon material; a separator comprises a base material layer and a filler layer that faces a positive electrode; the filler layer contains a filler and a resin that has an amide bond; the resin that has an amide bond comprises a specific block A and a specific block B; units composed of 4,4'-diphenylsulfonyl terephthalamide account for 30% to 70% of all units of the resin; the content of the filler in the filler layer is 20% by mass to 90% by mass; and if 1 µl of propylene carbonate is dropped on the filler layer, the contact angle at one second after the dropping is 10° or less.
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Inventors:
MORISHIMA HIDEKI
IWAMOTO TAKUYA
TANI YUJI
HORIE KENSAKU (JP)
IWAMOTO TAKUYA
TANI YUJI
HORIE KENSAKU (JP)
Application Number:
PCT/JP2023/001633
Publication Date:
August 03, 2023
Filing Date:
January 20, 2023
Export Citation:
Assignee:
PANASONIC ENERGY CO LTD (JP)
PANASONIC HOLDINGS CORP (JP)
SUMITOMO CHEMICAL CO (JP)
PANASONIC HOLDINGS CORP (JP)
SUMITOMO CHEMICAL CO (JP)
International Classes:
H01M50/46; H01M4/38; H01M4/505; H01M4/525; H01M50/423; H01M50/434; H01M50/443; H01M50/451
Foreign References:
| JP2017139117A | 2017-08-10 | |||
| CN109148790A | 2019-01-04 | |||
| JP2022042995A | 2022-03-15 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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