Cathode active material for non-aqueous electrolyte secondary cell and process for producing the same
US6756154B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Nov 28, 2001 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Jan 25, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode active material for a non-aqueous electrolyte secondary cell having a c-axis length of lattice constant of 14.080 to 14.160 å, an average particle size of 0.1 to 5.0 &mgr;m, and a composition represented by the formula:LiCo(1−x−y)MnxMgyO2wherein x is a number of 0.008 to 0.18; and y is a number of 0 to 0.18. This cathode active material is capable of maintaining an initial discharge capacity required for secondary cells and showing improved charge/discharge cycle characteristics under high temperature conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.