Lithium manganese oxide insertion compounds and use in rechargeable batteries
US5882218A · kind A · utility
40Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1996 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Mar 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A novel form of the insertion compound having the formula Li.sub.x Mn.sub.2 O.sub.4 and a tetragonal crystal structure has been synthesized wherein x is a number in the range from about 1.7 to about 2.1. The insertion compound has a voltage relative to Li/Li.sup.+ in the range from about 3.2 to about 3.8 V and is thus air stable. The insertion compound is useful as an electrode material for lithium ion batteries. In particular, the insertion compound can be used as a cathode additive to result in a cathode limited construction. In certain applications, this can result in improved tolerance to overdischarge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.