Method for making an improved solid polymer electrolyte electrode using a liquid or solvent
US4824508A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1985 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Dec 9, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/109
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention is a method for forming a solid polymer electrolyte structure comprising: PA1 a. forming a suspension of catalytically active, electrically conductive particles and a liquid such as dibromotetrafluoroethane; PA1 b. applying the suspension to at least one side of a fluorocarbon membrane sheet, while said sheet is in its thermoplastic form; PA1 c. removing substantially all of the liquid, leaving the particles on the membrane sheet; PA1 d. pressing at least a portion of the particles into the membrane sheet; PA1 e. contacting the side of the so-treated membrane having the particles on the surface with an electrically conductive, hydraulically permeable matrix; PA1 f. subjecting the membrane/matrix combination to a pressure sufficient to embed at least a portion of the matrix into the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.