Binder containing polyvinylidene fluoride capable of fixing to a metal and associated lithium-ion battery electrode
US10717890B2 · kind B2 · utility
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2References
16Claims
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Key dates
| Filing date | Nov 17, 2016 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | May 4, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a binder which can be used in a lithium-ion battery, comprising at least one polyvinylidene fluoride and at least one acrylic copolymer including monomers having functional groups which have an affinity for metals or are capable of fixing to the metals. According to the invention, in a characteristic manner, said polyvinylidene fluoride is such that a solution of N-methyl-2-pyrrolidone containing 5 wt % of said polyvinylidene fluoride has a viscosity, measured at 23° C. with an imposed shear rate of 30 rpm, of 125 mPa·s to 1500 mPa·s.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.