Additives for improving the reversibility of a carbon electrode of a lithium ion secondary electrochemical generator
US6489063B1 · kind B1 · utility
4Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2000 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Oct 6, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to additives to improve the reversibility of a carbon electrode of a lithium ion secondary electrochemical generator. These additives are composed of cyclic or non-cyclic &agr;-halogenated esters such as &agr;-bromo-&ggr;-butyrolactone or methyl chloroformiate. They may be added to the electrolyte at a rate of 0.5 to 3% by volume or adsorbed on the carbon electrode to form a passivation film on said electrode during the first use of the generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.