Method of producing negative electrode for nonaqueous electrolyte secondary battery and method of producing nonaqueous electrolyte secondary battery
US10923705B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2018 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Jul 12, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative electrode active material, a first carbon material, a thickener, and a solvent are mixed to prepare a first dispersion solution. The first dispersion solution and a second carbon material are mixed to prepare a second dispersion solution. The second dispersion solution and a binder are mixed to prepare a negative electrode paint. The negative electrode paint is applied to a surface of a negative electrode current collector and dried to produce a negative electrode for a nonaqueous electrolyte secondary battery. The negative electrode active material has a BET specific surface area of 3 m2/g or more and 8 m2/g or less. The first carbon material has a BET specific surface area of 30 m2/g or more and 100 m2/g or less. The second carbon material has a BET specific surface area of 200 m2/g or more and 500 m2/g or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.