Solid polymer electrolyte, method of making, and electrochemical device using the same
US6395419B1 · kind B1 · utility
18Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1998 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Feb 12, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid polymer electrolyte is prepared by forming a polymer solution containing a filler into a film, evaporating off the solvent from the film, and impregnating the film with an electrolytic solution. The impregnated polymer electrolyte has a swelling factor of at least 2.2. The method is efficient enough to produce the polymer electrolyte at a low cost. The polymer electrolyte is useful in electrochemical devices such as lithium secondary batteries and electric double layer capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.