Positive electrode material mixture, and positive electrode for non-aqueous secondary battery and secondary battery, employing it
US9214665B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Mar 29, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide a positive electrode material mixture for a non-aqueous secondary battery, which is less likely to be gelled and has a good applicability to a current collector, and is capable of producing a battery capable of sufficiently exhibiting practical performance. A positive electrode material mixture which comprises a cathode active material, a binder containing a fluorinated copolymer having polymerized units derived from tetrafluoroethylene and polymerized units derived from propylene, and an aqueous medium, wherein the cathode active material is that the pH of a supernatant obtained by mixing the cathode active material with water is at least 10, and a positive electrode and a secondary battery, obtainable by employing it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.