Negative electrode slurry composition, lithium ion secondary battery negative electrode, and lithium ion secondary battery
US9711785B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2013 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Apr 4, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a negative electrode slurry composition including a binder resin, a water-soluble polymer, and a negative electrode active material, wherein the binder resin including (A) a styrene-butadiene copolymer latex having a gel amount of 70 to 98% and having a glass transition temperature in dynamic viscoelasticity measurement with a single peak at −30° C. to 60° C. and (B) a polymer latex formed of a hetero-phase structure having a glass transition temperature in dynamic viscoelasticity measurement with at least one peak at −100° C. to 10° C. and having a glass transition temperature in dynamic viscoelasticity measurement with at least one peak at 10° C. to 100° C., and the negative electrode active material including a carbon-based active material and a silicon-based active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.