Nonaqueous-electrolyte secondary-battery negative electrode
US10270086B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2015 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Apr 17, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative electrode for nonaqueous electrolyte secondary batteries which suppresses generation of gas and increases power characteristics, including a negative electrode current collector and a negative electrode mixture layer placed on the negative electrode current collector. The negative electrode mixture layer is a mixture of a negative electrode active material, a binding agent, and a conductive agent. The negative electrode active material contains silicon. The binding agent includes a binding agent A made of a rubber polymeric compound. A through-thickness cross section of the negative electrode mixture layer halved into a current collector-side region and a surface-side region, has the amount of the binding agent A in the current collector-side region larger than the amount of the binding agent A in the surface-side region and the amount of the conductive agent in the surface-side region is larger than the amount of the conductive agent in the current collector-side region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.