Method of making a fuel cell electrode by thermal decomposition
Abstract
Abstract A FUEL CELL, A FUEL CELL ELECTRODE USEFUL THEREIN AND A METHOD OF MAKING SUCH ELECTRODE ARE DISCLOSED. THE ELECTRODE IS COMPOSED OF A MIXTURE OF DISCRETE PARTICLES OF AN ELECTRICALLY CONDUCTIVE MATERIAL COATED WITH METALLIC SILVER AND DISCRETE PARTICLES OF A WATER-REPELLANT POLYMER BOUND TOGETHER THEREWITH AND PROVIDED WITH A METALLIC MESH EMBEDDED WITHIN THE AFORESAID MIXTURE TO SUPPORT THE SAME AND PROVIDE ELECTRICAL COMMUNICATING MEANS FOR USE IN A GAS DIFFUSION ELECTRODE. THE ELECTRODE IS MADE BY COATING DISCRETE PARTICLES OF AN ELECTRICALLAY CONDUCTIVE MATERIAL, SUCH AS NICKEL POWDER OR CARBON POWDER, WITH A SILVER SLAT WHICH THERMALLY DECOMPOSES TO METALLIC SILVER WITH EVOLUTION OF A GAS, SUCH AS SILVER CARBONATE OR SILVER OXALATE; FORMING A MIXTURE OF SUCH COATED PARTICLES WITH PARTICLES OF A WATER-REPELLANT POLYMER, SUCH AS A FLUOROCARBON POLYMER; SHAPING THE SO-FORMED MIXTURE INTO A FORMED ELECTRODE; AND SUBJECTING THE SO-FORMED ELECTRODE TO ELEVATED TEMPERATURES SUFFICIENT TO DECOMPOSE THE SILVER SALT TO METALLIC SILVER, WHICH UNIFORMLY COATS THE CONDUCTIVE MATERIAL.
Inventors
- 👤 Hideo Baba
- 👤 Masayoshi Gando
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |