Nonaqueous electrolyte battery, battery pack and vehicle
US8663850B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2007 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Jun 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A nonaqueous electrolyte battery includes a negative electrode and a nonaqueous electrolyte. The negative electrode comprises an active material having a lithium ion insertion potential of 0.4V (vs Li/Li+) or more, a conductive agent and a current collector. The nonaqueous electrolyte contains first sultones having an unsaturated hydrocarbon group. A diameter distribution of pores of the negative electrode when measured by mercury porosimetry has a first peak having a mode diameter of 0.01 to 0.2 μm and a second peak having a mode diameter of 0.003 to 0.02 μm. A volume of pores having a diameter of 0.01 to 0.2 μm and a volume of pores having a diameter of 0.003 to 0.02 μm, which are measured by the mercury porosimetery, are 0.05 to 0.5 mL and 0.0001 to 0.02 mL, respectively, per g of the negative electrode excluding the current collector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.