Method of making a final cell electrode assembly substrate
US5026402A · kind A · utility
6Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1990 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Oct 22, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A porous substrate of a fuel cell electrode assembly is formed by producing a fibrous carbon precursor web by means of a conventional wet paper-making process. The precursor web is then dried and saturated with a wet resinous binder which will carbonize when heated. Substantially the entirety of all of the carbon fibers in the web are thus coated with the binder, and substantially all of the inter-fiber junctures in the web will also be coated with the binder. The saturated web is then dried, and heat treated to convert the binder to a glassy carbon which exhibits superior resistance to corrosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.