Lithium ion battery
US8470476B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Oct 23, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium ion battery includes: a positive electrode; a negative electrode that includes a negative electrode active material layer that contains an alloy-formable active material; an ion permeable insulating layer that is interposed between the positive electrode and the negative electrode; and an ion conductive polymer layer that is interposed between the negative electrode and the ion permeable insulating layer, in which the ion conductive polymer layer is configured to include a negative electrode-side portion and an ion permeable insulating layer-side portion that have different compositions, and the ion permeable insulating layer-side portion is configured to have higher ion conductivity than the negative electrode-side portion. With such a lithium ion battery, charge/discharge cycle characteristics and rate characteristics can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.