Double-shell core lithium nickel manganese cobalt oxides
US9614226B2 · kind B2 · utility
3Cited by
3References
19Claims
0Family size
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Key dates
| Filing date | Oct 19, 2010 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Oct 19, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium transition metal oxide powder for use in a rechargeable battery is disclosed, where the surface of the primary particles of said powder is coated with a first inner and a second outer layer, the second outer layer comprising a fluorine-containing polymer, and the first inner layer consisting of a reaction product of the fluorine-containing polymer and the primary particle surface. An example of this reaction product is LiF, where the lithium originates from the primary particles surface. Also as an example, the fluorine-containing polymer is either one of PVDF, PVDF-HFP or PTFE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.