Nonaqueous electrolyte battery, battery pack and vehicle
US8263264B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2010 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Oct 5, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/7072
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material having a Lithium ion insertion potential of 0.4 V (vs. Li/Li+) or more. The separator is provided between the positive electrode and the negative electrode. The separator has a porosity of 50% or more and a pore diameter distribution in which a median diameter is larger than a mode diameter. The porosity and the pore diameter distribution are measured by mercury porosimetry. A surface roughness of the negative electrode is larger than the mode diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.