Title:
SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/062848
Kind Code:
A1
Abstract:
A secondary battery positive electrode active material that is an exemplary embodiment contains a first lithium nickel composite oxide having a D50 on a volume basis of 8-30 µm and contains a second lithium nickel composite oxide having a D50 on a volume basis of 6 µm or less. The first lithium nickel composite oxide is a secondary particle formed by the aggregation of primary particles, and at least one selection from Ca and Sr is present on the primary particle surface. The content of the total of Ca plus Sr for the first lithium nickel composite oxide is greater than or equal to the content of the total of Ca plus Sr for the second lithium nickel composite oxide.
Inventors:
KO TAKASHI
INOUE KATSUYA
OGASAWARA TAKESHI
INOUE KATSUYA
OGASAWARA TAKESHI
Application Number:
PCT/JP2023/031101
Publication Date:
March 28, 2024
Filing Date:
August 29, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/525; H01M4/36
Foreign References:
| JP2013065467A | 2013-04-11 | |||
| CN104681808A | 2015-06-03 | |||
| CN105161714A | 2015-12-16 | |||
| JP2020532842A | 2020-11-12 | |||
| JP2010535699A | 2010-11-25 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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