Lithium ion secondary battery
US8460825B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Aug 26, 2010 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Oct 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium ion secondary battery including a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a nonaqueous electrolyte. The positive electrode active material is a lithium transition metal oxide that contains niobium and is represented by xLi[Li1/3Mn2/3-qNbq]O2·(1−x)LiM1-rNbrO2 (0<x<1, 0<xq+(1−x)r≦0.3, 0≦q≦0.3, 0≦r≦0.3, and M: at least one element selected from the group consisting of nickel, cobalt, and manganese). During initial charging, oxygen desorbs from the positive electrode active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.