Three layer laminated matrix electrode
US4500647A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1982 |
| Grant date | Feb 19, 1985 |
| Priority date | — |
| Expiry date | Sep 28, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The disclosure is directed to preparing three-layer laminated "matrix" electrodes suitable for use as oxygen (air) cathodes in chlor-alkali and other electrochemical cells, fuel cells and in other electrochemical applications. The term "matrix" as used herein means that the active carbon particles are present within an unsintered network of carbon black-PTFE (fibrillated) material. This three-layer laminated electrode includes a porous, coherent, hydrophobic polytetrafluoroethylene (PTFE)-containing backing (wet proofing) layer, with or without carbon black therein, in contact with the non-working surface of a "matrix" active layer containing catalyzed or uncatalyzed active carbon particles present within an unsintered network of fibrilliated carbon black-PTFE and an electroconductive current distributor laminated to the working surface of said active layer, and to a process for making said laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.