Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY POSITIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/157981
Kind Code:
A1
Abstract:
This nonaqueous electrolyte secondary battery positive electrode is characterized by comprising a positive electrode current collector and a positive electrode mixture layer formed on at least one surface of the positive electrode current collector, and is characterized in that: the mass per unit area of the positive electrode mixture layer on the one surface side is 300 g/m2 or more; the positive electrode mixture layer has a positive electrode active material and a binder including a fluorine-containing polymer having a weight average molecular weight of 1,000,000 or more; and the positive electrode current collector has a contact angle with respect to N-methyl-2-pyrrolidone of 15-35°, inclusive.
Inventors:
FUJIWAKE HIDEAKI
CHIBA TAKESHI
NOMURA SHUN
CHIBA TAKESHI
NOMURA SHUN
Application Number:
PCT/JP2023/006280
Publication Date:
August 24, 2023
Filing Date:
February 21, 2023
Export Citation:
Assignee:
PANASONIC ENERGY CO LTD (JP)
International Classes:
H01M4/505; H01M4/131; H01M4/525; H01M4/62
Domestic Patent References:
| WO2020071336A1 | 2020-04-09 | |||
| WO2021241075A1 | 2021-12-02 | |||
| WO2021241077A1 | 2021-12-02 |
Foreign References:
| JP2005222936A | 2005-08-18 | |||
| JP2016038962A | 2016-03-22 | |||
| JP2022013822A | 2022-01-18 |
Attorney, Agent or Firm:
YKI Intellectual Property Attorneys (JP)
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