Nonaqueous electrolyte battery and battery pack
US9692042B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2015 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Aug 28, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, there is provided a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a negative electrode, a positive electrode, and a nonaqueous electrolyte. An Li-atom abundance ratio ALi, Ti-atom abundance ratio ATi, and C-atom abundance ratio AC of a surface of the negative electrode satisfy inequalities 2≦AC/ATi≦10, and 1.0≦ALi/AC≦1.5. The positive electrode includes a nickel-cobalt-manganese composite oxide represented by a composition formula Li1−aNixCoyMnzO2. Subscripts x, y, and z satisfy an inequality 0.1≦x/(y+z)≦1.3, and subscript a satisfies an inequality 0≦a≦1. A ratio p/n of a capacity p of the positive electrode to a capacity n of the negative electrode is within a range of 1.2 to 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.