| 摘要 |
1,159,346. Fuel cell with two-layer electrolyte matrix. LEESONA CORP. 23 Sept., 1966 [30 Sept., 1965], No. 42467/66. Heading H1B. A fuel cell comprises an electrolyte-retaining matrix which consists of an electrically conductive layer (3a) in face-to-face contact with an electrically non-conductive layer (3b), a thin electrode (2 and 6) in contact with each of the two outer faces of said matrix, and means (7 and 8) for supplying reactant to a surface of each of said electrodes. A conductive layer (5) may be placed between the non-conductive matrix layer and the adjacent electrode. The drawing, to which the above references relate, represents an embodiment of the invention. The conductive matrix layer may be of, e.g. Ni, Cu, Ta, Au, Ag, Pd, Pt or Rh; the non-conductive layer may be e.g. an oxide of Ce, Th, Si, Zr or Mg and may be applied to the conductive layer by flame spraying, electrophoresis or sintering. The electrodes may be a mixture of an electrochemically active metal, e.g. Cu, Ag, Au, Co, Ni, Pt, Ru, Pd, Os, Ir and Rh, and a hydrophobic polymer, e.g. P.T.F.E., polystyrene, polyethylene, polyvinylfluoride, polyvinylidenefluoride and polytrifluorochloroethylene, applied directly to the surfaces of the matrix by pressing, rolling or spraying a dispersion, and heated to sinter the polymer; where H 2 is the fuel a Pd/Ag alloy membrane anode may be used. The optional conductive layer (5) may be a thin film coating of e.g. Au, Ni or Ag, or a screen, expanded metal, felt or mesh of e.g. Ni, Ta, Cu, Au, Ag, Pd, Pt and Rh, pressed into contact with the catalytic layer. Suitable electrolytes include the hydroxides and carbonates of Na, K, Rb and Cs, and H 3 PO 4 and H 2 SO 4 . Suitable fuels include H 2 , hydrocarbons and ammonia. In an example a porous Ni sheet is flamesprayed with cerium oxide; a layer of gold is electrodeposited on the cerium oxide layer, and the nickel and gold faces are then sprayed with an aqueous dispersion of P.T.F.E. and Pt black. The structure is used in a cell fed with H 2 and O 2 using 28% aqueous KOH as electrolyte. |
