Electrode for lithium-ion battery comprising a binder formed from a blend of two polymers, the first polymer being a first polyacrylate or one of its derivatives, the second polymer being a second polyacrylate or a carboxymethyl cellulose or one of their derivatives, ink for producing such an electrode
US11050054B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 7, 2017 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Dec 9, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2004/021
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrode for a lithium storage battery, or a lithium battery, including: an active electrode material, made from silicon, a conductive agent, a binder comprising a mixture of two polymers: the first polymer having a first molecular weight, the first polymer being a first polyacrylate or one of its derivatives, the second polymer having a second molecular weight, the second polymer being a second polyacrylate or a carboxymethyl cellulose, or one of their respective derivatives. The first molecular weight is less than or equal to 400,000 g/mol and greater than or equal to 150,000 g/mol. The second molecular weight is greater than or equal to 650,000 g/mol and less than or equal to 4,000,000 g/mol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.