| 摘要 |
931,959. Fuel cells. CHARLES F. KETTERING FOUNDATION. March 3, 1961 [March 4, 1960], No. 7832/61. Class 53. A fuel cell having an electrolyte container defined by the electrodes and being supplied with fuel and oxidiser from the other sides of the electrodes, has a water-repellent coating on the cathode. The cell is run above the boiling point of water so that the water is expelled as vapour. The electrolyte is preferably a eutectic mixture of potassium and sodium hydroxides in a molten state but may be a paste of alkali metal hydroxide and alkaline earth hydroxide. Phosphoric acid thickened by silica may also be used as electrolyte. The coating is preferably a fluorocarbon compound. Glass hemispheres 12, 16 enclose a fuel electrode 20 of palladium foil and an oxygen electrode 22 of a silver screen filled with a silver/P.T.F.E. mix. A heat insulant 25 is added. Conduits 31, 32 are for flushing the chambers. A palladium black/P.T.F.E. paste on a platinum screen may replace the palladium foil. In a modification carbon plates carry the active pastes.
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