Lithium ion secondary battery
US10276889B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2016 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Jun 7, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a lithium ion secondary battery including: a positive electrode having a positive electrode active material layer disposed on a positive electrode current collector; a negative electrode having a negative electrode active material layer disposed on a negative electrode current collector; and an electrolyte solution. The positive electrode active material layer includes a positive electrode active material containing a lithium nickel composite oxide. The positive electrode contains an alkaline component by less than 1% relative to a weight of the positive electrode active material. The electrolyte solution includes an additive containing a cyclic carbonate additive with an unsaturated bond. A molar ratio of the cyclic carbonate additive with an unsaturated bond relative to a total molar amount of the additive is 78% or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.