Additives for improving cycle life of non-aqueous rechargeable lithium batteries
US5891592A · kind A · utility
34Cited by
0References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Mar 5, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The loss in delivered capacity (fade) after cycling non-aqueous rechargeable lithium batteries can be reduced by incorporating a small amount of certain additive compounds in the battery. The additive compound comprises boron, oxygen, and organic end groups that are chemically compatible with the battery components. The structure of the additive compound contains a boroxine (BO).sub.3 ring. The invention is particularly suited to lithium ion batteries. Trimethoxyboroxine and trimethylboroxin are particularly effective additives. Preferably, the additive compound is dissolved in the electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.