Method for evaluating a characteristic of a nonaqueous electrolyte secondary battery positive electrode active material
US11855283B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Oct 10, 2022 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Oct 10, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a method of evaluating a characteristic of a positive electrode active material for non-aqueous electrolyte secondary batteries, including a lithium-metal composite oxide powder including a secondary particle configured by aggregating primary particles containing lithium, nickel, manganese, and cobalt, or a lithium-metal composite oxide powder including both the primary particles and the secondary particle. The secondary particle has a porous internal structure. The characteristic being evaluated is a slurry pH, a soluble lithium content rate, or a porosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.