Additives for extruding polymer electrolytes
US5486435A · kind A · utility
11Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1994 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Jan 25, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M6/168
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Preparation of an electrolyte film for lithium/polymer electrolyte batteries by extruding a powder mixture containing a polymer, a lithium salt and an additive consisting of an ultra fine powder of a metal oxide, such as silica, aluminum, or titanium oxide with a particle size between about 7 and 40 nm. The role of the additive is to prevent the formation of adhesive solid blocks in the powder mixture and to allow the introduction of this mixture in the extruder. Electrolyte compositions, electrolytes as well as electrochemical generators obtained according to the invention are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.