Lithium ion rechargeable battery
US8057935B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 6, 2006 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Oct 6, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high power lithium-ion secondary battery having an increased capacity and capable of maintaining high discharge voltage and repeating charging/discharging high current. A lithium-ion secondary battery having an electrode group formed by laminating or winding a negative electrode layer and a positive electrode layer so as to interpose a separator made of synthetic resin, the negative electrode layer containing a material capable of intercalating/deintercalating lithium-ion, and the positive electrode layer including a lithium-containing metallic oxide; and a non-aqueous electrolyte containing lithium salt, where the electrode group is immersed. The positive electrode material unit contains a fluorinated lithium-containing metallic oxide as a main material, and the separator possesses a hydrophilic group. Further, the positive electrode material preferably contains a main material including LiNixCoyMnzO2, where 0.6≦x<1, 0<y≦0.2, 0<z≦0.2, and x+y+z=1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.