Binder composition for secondary battery, electrode mixture for secondary battery employing it, and secondary battery
US9306219B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2012 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Jul 13, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A binder composition of the present invention is for a non-aqueous secondary battery with excellent adhesion between an electrode active material and a current collector. A degree of electrode swelling with an electrolytic solution at a high temperature is small. This binder composition can be used in production of an electrode mixture for a non-aqueous secondary battery. The binder composition can comprise a binder made of a fluorinated copolymer having repeating units derived from tetrafluoroethylene and repeating units derived from propylene, and a solvent or dispersing medium, wherein the fluorinated copolymer has a weight average molecular weight of from 10,000 to 300,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.