Secondary battery of improved life characteristics by elimination of metal ions
US7560191B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 21, 2006 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Sep 1, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a lithium secondary battery having improved life characteristics by removal of metal ion impurities incorporated during an assembly process of the battery via a cation exchange process, thereby preventing electrodeposition of the metal ions on an anode, through the addition of a cation exchange material, containing cations selected from the group consisting of lithium, sodium, ammonium and any combination thereof, to an electrode and/or a surface of a separator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.