Electrolytic membrane, method of manufacturing it and use
US6514561B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1999 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | May 6, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Electrolytic membrane comprising an ion-conducting polymer which is fixed in the pores of a porous polyalkene membrane stretched in at least one direction, wherein the polyalkene membrane has a porosity of 30-90% and a mean pore diameter of 0.1 to 5.0 &mgr;m.The electrolytic membrane can be manufactured by impregnating the polyalkene with a suitable solution of the ion-conducting polymer at a temperature which is at least 80° C., preferably at least 110° C., and which is not above the melting point of the polyalkene membrane used.The electrolytic membrane is very suitable for use in solid-polymer fuel cells and batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.