Spinel type lithium-mangenese oxide material, process for preparing the same and use thereof
US5807646A · kind A · utility
37Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Feb 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A novel lithium-manganese oxide composition suitable for use in lithium secondary batteries as an active material for positive electrodes, said oxide having a spinel type crystal structure, an Li:Mn molar ratio of 0.9-1.10:2.00, a mean Mn oxidation number of 3.40-3.60 valencies, and a BET specific surface area of at least 1 m.sup.2 /g, substantially all the primary particles of said oxide being less than 1 .mu.m; a process for preparing such an oxide and a lithium secondary battery containing such an oxide are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.