Method of fabricating a carbon - polytetrafluoroethylene electrode - support
US3935029A · kind A · utility
31Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Feb 19, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrode substrate is described which is suitable for supporting noble metal electrodes in fuel cells and similar electrochemical cells. It is composed of fine graphite particles enmeshed in a web of fibers of polytetrafluoroethylene (PTFE) produced by forming a homogeneous mixture of graphite particles and PTFE powder in an organic liquid, removing the liquid, and milling the mixture in a series of steps to form a thin, porous, electrically conductive sheet of graphite-PTFE which is an excellent support for thin film metallic electrodes and which is resistant to corrosive electrolytes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.