Island-covered lithium cobaltite oxides
US8785042B2 · kind B2 · utility
4Cited by
5References
23Claims
0Family size
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Key dates
| Filing date | Jan 17, 2008 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Apr 22, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a cathode active material and a method to produce the same at low cost. The cathode powder comprises modified LiCoO2, and possibly a second phase which is LiM′O2 where M′ is Mn, Ni, Co with a stoichiometric ratio Ni:Mn≧1. The modified LiCoO2 is Ni and Mn bearing and has regions of low and high manganese content, where regions with high manganese content are located in islands on the surface. The cathode material has high cycling stability, a very high rate performance and good high temperature storage properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.