| 摘要 |
1,191,332. Fuel cells. UNITED AIRCRAFT CORP. 20 June, 1967 [13 July, 1966]. No. 28498/67. Heading H1B. In a fuel cell with porous electrodes 4, 6 and a porous matrix 2 containing an electrolyte there is provided a peripheral chamber 28 communicating with the electrolyte chamber of the cell via a passagesay 30 and containing a ring of porous material to receive electrolyte via the passage 30 on electrolyte expansion, and a gas space 38 by which pressure can be applied to the porous ring. As shown, the ring is in two parts, the inner part 32 being of the same porosity as the electrolyte matrix 2 and the outer being of coarser porosity. The gas in space 38 is at a pressure near that of the fuel and oxidant in chambers 11, 12 so that excess electrolyte expelled from matrix 2 through annular passage 30 is absorbed in ring 36 without any substantial pressure variation in the cell as it heats up to its operating temperature. |
