Rechargeable lithium battery with specific surface roughness of positive electrode and/or negative electrode
US7521151B2 · kind B2 · utility
25Cited by
6References
88Claims
0Family size
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Key dates
| Filing date | Sep 3, 2004 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Oct 8, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rechargeable lithium battery includes a positive electrode having a positive active material to reversibly intercalate and deintercalate lithium ions, a negative electrode having a negative active material, and an electrolyte, wherein an arithmetic mean Ra of a surface roughness of the positive electrode is 155 to 419 nm, and an arithmetic mean Ra of a surface roughness of the negative electrode is 183 to 1159 nm after the rechargeable lithium battery is charged and discharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.