Process for producing layered rock-salt type lithium cobalt oxide by hydrothermal oxidation
US6399041B1 · kind B1 · utility
2Cited by
11References
5Claims
0Family size
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Key dates
| Filing date | Jan 14, 1999 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Jan 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium cobalt oxide (LiCoO2) having a layered rock-salt type structure produced at low temperatures by hydrothermally treating at least one water-soluble cobalt salt in an aqueous solution containing a water-soluble lithium salt and an alkali metal hydroxide at 105 to 300° C. in the presence of an oxidizing agent. An inexpensive salt of divalent cobalt is used as a starting material in this process. The lithium cobalt oxide thus obtained is useful as a cathode material for rechargeable lithium batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.