Title:
正極およびこれを備える非水電解液二次電池
Document Type and Number:
Japanese Patent JP7399904
Kind Code:
B2
Abstract:
The positive electrode is provided with a positive electrode current collector and a positive electrode active material layer that is supported on the positive electrode current collector. The positive electrode active material layer contains a positive electrode active material and a surfactant. The positive electrode active material contains a lithium composite oxide that has a nickel content, with respect to the metal atoms other than lithium, of at least 70 mol %. The positive electrode active material layer has a multilayer structure that includes at least two layers that have different mass percentages of the surfactant with respect to the total of the positive electrode active material and the surfactant. The mass percentage of the surfactant in a layer that has a larger mass percentage of surfactant, of the layers present in the multilayer structure is not less than 1.0 mass % and not more than 10 mass %.
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Inventors:
Shinya Suzuki
Tsujiko Sunday
Tsujiko Sunday
Application Number:
JP2021059556A
Publication Date:
December 18, 2023
Filing Date:
March 31, 2021
Export Citation:
Assignee:
Prime Planet Energy & Solutions Co., Ltd.
International Classes:
H01M4/131; H01M4/525; H01M4/62; H01M10/0525; H01M10/0566
Domestic Patent References:
| JP2010251047A | ||||
| JP2012528466A | ||||
| JP2005174631A | ||||
| JP2003142082A | ||||
| JP2018500720A |
Foreign References:
| WO2021012768A1 |
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Hiroaki Yamane
Koji Amano
Michiko Oi
Hiroaki Yamane
Koji Amano