Binder composition, mixture for producing electrode for non-aqueous electrolyte secondary battery, electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
US11777097B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2018 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Jul 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2004/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is to provide a binder composition of a non-aqueous electrolyte secondary battery, which contains a vinylidene fluoride polymer and is capable of further enhancing adhesive strength of the electrode mixture layer to a surface of a current collector. The above objective can be achieved by a binder composition of a non-aqueous electrolyte secondary battery, the binder composition comprising a vinylidene fluoride copolymer for a binder of a non-aqueous electrolyte secondary battery, the vinylidene fluoride copolymer containing: a first constituent unit derived from vinylidene fluoride, and a second constituent unit containing an isocyanate group or having a structure that produces an isocyanate group when heated at 200° C. for 1 hour. This binder composition can be used in a mixture for producing an electrode for a non-aqueous electrolyte secondary battery, an electrode for a non-aqueous electrolyte secondary battery, and a non-aqueous electrolyte secondary battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.