Cathode active material, cathode mixture, method for producing cathode active material, method for producing cathode, and method for producing oxide solid-state battery
US11139468B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Sep 11, 2018 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Jan 21, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a cathode active material that can lower sintering temperature, the cathode active mated al including a particle of a lithium containing composite oxide having a layered rock-salt crystalline phase, wherein the layered rock-salt crystalline phase is partially deficient in lithium, a percentage of deficient lithium in the layered rock-salt crystalline phase in a surface portion of the particle is higher than that in the layered rock-salt crystalline phase inside the particle, and the particle includes two phases that are different in lattice constant as the layered rock-salt crystalline phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.