Non-aqueous electrolyte secondary battery
US9899649B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 26, 2014 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Sep 1, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A non-aqueous electrolyte secondary battery, when using an aqueous binder as a binder for a negative electrode active material, effectively exhausts the gas generated from an electrode, and thus, even when using it for a long period of time, a decrease in battery capacity is low. The non-aqueous electrolyte secondary battery includes a positive electrode active material layer on a surface of a positive electrode current collector, a negative electrode active material layer comprising an aqueous binder on a surface of a negative electrode current collector, a separator for maintaining an electrolytic solution, and a gas releasing means for releasing a gas generated within the power generating element to an extra space inside of the outer casing, and in which the ratio value of a volume of the extra space to a volume of pores included in the power generating element is 0.5 to 1.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.