Negative electrode for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery
US10903485B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2017 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jan 19, 2038 |
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 includes a negative electrode current collector and a negative electrode mixture layer disposed on the negative electrode current collector, and the negative electrode mixture layer contains a negative electrode active material containing lithium titanate, a binder, and a (meth)acrylic acid-based polymer. The amount of the (meth)acrylic acid-based polymer in the negative electrode mixture layer is 10 mass % or less relative to the total amount of the (meth)acrylic acid-based polymer and the binder. The amount of the (meth)acrylic acid-based polymer in a portion of the negative electrode mixture layer that extends from the surface to the middle of the negative electrode mixture layer in the thickness direction (upper region) is 60 mass % or more relative to the total amount of the (meth)acrylic acid-based polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.