Abstract: A method for preparing a lithium ion solid-state accumulator comprising an anode, a cathode, and a solid-state electrolyte includes pressing and sintering pre-calcined electrolyte powder to an electrolyte layer. The pre-calcined electrolyte powder comprises at least one phosphate compound, at least one silicide compound, or at least one phosphorus sulfide. The method further includes applying, on both sides of the electrolyte layer, one electrode each. Prior to the application of the at least one electrode layer on a surface of the sintered electrolyte layer, first, at least one intermediate layer, and, then, on this intermediate layer, the electrode layer is applied. The at least one intermediate layer is a layer of electrolyte and anode material and/or a layer of electrolyte and cathode material.

Abstract: A method for preparing a lithium ion solid-state accumulator comprising an anode, a cathode, and a solid-state electrolyte includes pressing and sintering pre-calcined electrolyte powder to an electrolyte layer. The pre-calcined electrolyte powder comprises at least one phosphate compound, at least one silicide compound, or at least one phosphorus sulfide. The method further includes applying, on both sides of the electrolyte layer, one electrode each. Prior to the application of the at least one electrode layer on a surface of the sintered electrolyte layer, first, at least one intermediate layer, and, then, on this intermediate layer, the electrode layer is applied. The at least one intermediate layer is a layer of electrolyte and anode material and/or a layer of electrolyte and cathode material.

Abstract: In a fuel cell stack including several fuel cells each comprising a cathode, an anode and an electrolyte layer disposed between the anode and the cathode, wherein the anode includes a catalyst for the reforming or for the oxidation of fuel and the fuel cells are electrically and mechanically interconnected by connecting elements which consist of a metal or metal alloy. The connecting elements include each a porous wall on which the anode is formed so as to be in close contact with the respective connecting element.

Abstract: In an anode structure for a high temperature fuel cell which has a non-catalytic phase and a catalytic phase with respect to methane-vapor reforming reactions, a substrate with a bi-polar plate disposed thereon has areas of different catalytic activity levels, that is, an area in which the regular catalytic metallic phase has been replaced by a catalytic metallic phase with low catalytic activity whereby the methane vapor reforming reaction is delayed in the areas of reduced catalyst activity.