Title:
POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, BATTERY MODULE, AND BATTERY SYSTEM THAT USE SAME
Document Type and Number:
WIPO Patent Application WO/2023/182271
Kind Code:
A1
Abstract:
Provided is a positive electrode (1) for a nonaqueous electrolyte secondary battery, the positive electrode (1) comprising a current collector (11), and a positive electrode active material layer (12) present on the current collector (11) and containing positive electrode active material particles, wherein a current collector covering layer (15) containing a conductive material is present on at least part of the surface on the positive electrode active material layer (12) side of the current collector (11), an active material covering part containing a conductive material is present on at least part of the surface of the positive electrode active material particle, the volume density of the positive electrode active material layer (12) is 1.80-2.30 g/cm3, the positive electrode active material layer (12) contains conductive carbon, the content of the conductive carbon with respect to the total mass of the positive electrode active material layer (12) is 0.5 mass% or more but less than 3.0 mass%, the positive electrode active material layer (12) is a porous layer, and the average pore diameter (D50) of pores of the positive electrode active material layer (12) is 0.07-0.15 μm.
Inventors:
YOSHIKAWA HIKARU (JP)
MOMOZAKI TARO (JP)
SABI YUICHI (JP)
MOMOZAKI TARO (JP)
SABI YUICHI (JP)
Application Number:
PCT/JP2023/010883
Publication Date:
September 28, 2023
Filing Date:
March 20, 2023
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
H01M4/13; H01M4/136; H01M4/36; H01M4/58; H01M4/62; H01M4/66
Domestic Patent References:
| WO2017119288A1 | 2017-07-13 | |||
| WO2018179900A1 | 2018-10-04 |
Foreign References:
| JP2021057106A | 2021-04-08 | |||
| JP2017013748A | 2017-01-19 | |||
| CN106784694A | 2017-05-31 | |||
| JP2021153012A | 2021-09-30 | |||
| JP2016115598A | 2016-06-23 | |||
| JP2020155223A | 2020-09-24 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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