Positive electrode active material including particle comprising crystal structure changing from a layered structure to a spinel structure, method of manufacturing the positive electrode active material, and non-aqueous electrolyte secondary battery using the positive electrode active material
US8557440B2 · kind B2 · utility
30Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | Sep 30, 2010 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Jan 6, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive electrode active material having a lithium-excess lithium-transition metal composite oxide particle represented by the chemical formula Li1.2Mn0.54Ni0.13Co0.13O2. The lithium-excess lithium-transition metal composite oxide particle has an inner portion (1) having a layered structure and a surface adjacent portion (2) having a crystal structure gradually changing from a layered structure to a spinel structure from the inner portion (1) toward the outermost surface portion (3). The layered structure and the spinel structure have an identical ratio of the amount of Mn and the total amount of Ni and Co.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.