Positive electrode films for alkali metal polymer batteries and method for making same
US7700018B2 · kind B2 · utility
2Cited by
15References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2003 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Aug 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for extruding a thin positive electrode sheet having at least 40%/wt of solid content for a lithium polymer battery through a single or twin screw extruder is disclosed as well as a positive electrode sheet produced therefrom. A mixture of active cathodic intercalation material, lithium salt and electronic conductive material is mixed with a polymer of the polyether family in a ratio of at least 40% of total weight into the mixing chamber of an extrusion machine and extruded through a classical sheet die into a thin cathode sheet or film onto a substrate in sheet form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.