Title:
POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/070891
Kind Code:
A1
Abstract:
This positive electrode for nonaqueous electrolyte secondary batteries is provided with: a positive electrode collector sheet; and a positive electrode mixture layer that is supported by the positive electrode collector sheet. The positive electrode mixture layer contains a positive electrode active material, a binder and a conductive agent. The positive electrode active material has a layered rock salt-type crystal structure, and contains a composite oxide which contains lithium and element A that is other than lithium. The element A contains at least nickel; and the atomic ratio of nickel to the element A, namely Ni/A is from 0.8 to 1.0. The binder contains a polymer binder that has a three-dimensional network structure. The mass of the positive electrode mixture layer supported per 1 m2 of the positive electrode collector sheet is 280 g or more.
Inventors:
HARADA TOMOHIRO
YAMAMOTO RINA
YAMAMOTO RINA
Application Number:
PCT/JP2021/033786
Publication Date:
April 07, 2022
Filing Date:
September 14, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/131; H01M4/505; H01M4/525; H01M4/62
Domestic Patent References:
| WO2011002097A1 | 2011-01-06 | |||
| WO2019168035A1 | 2019-09-06 |
Foreign References:
| JPH0831408A | 1996-02-02 | |||
| JPH0997611A | 1997-04-08 |
Other References:
"Topics, Activities of ABRI", FB TECHNICAL NEWS, vol. 11, no. 74, 2018, pages 34
Attorney, Agent or Firm:
KAWASAKI, HASHIMOTO AND PARTNERS (JP)
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