Oxydisches Kathodenmaterial für galvanische Brennstoffzellen für hohe Temperaturen

摘要

1,196,930. Solid electrolyte fuel cells. BROWN BOVERI & CO. Ltd. 20 Oct., 1967 [22 Oct., 1966], No. 47863/67. Heading H1B. A fuel cell suitable for use at elevated temperature comprises as electrolyte a body of oxide-ion-conducting material having a porous surface layer impregnated with a mixture of indium oxide and up to 30% by weight of gallium and/or zinc oxide which functions as cathode. The electrolyte body may be a disc made from a mixture of zirconium and yttrium oxides to which is sintered a porous surface layer of the same material . The cathode oxide mixture may be introduced as a solution of the metal nitrates. This solution is heated so as to evaporate the solvent and convert the nitrate to oxide. Several impregnation heating cycles are necessary to introduce sufficient oxide. The structure so formed may be used with a nickel anode as a hydrogen/air cell.