Abstract: Avoiding the use of porous ceramic bearing structures, the proposal is for a 3-layer electrolyte fuel cell element, one electrode (1) of which is at the same time the bearer plate for the active cell element (12, 2, 3), is integrated via component (4) into the frame structure for a cell battery made up of individual elements, and in which the mechanical closing force between the frame structure and the active cell element is released with the aid of a spring-loaded region (11), in order not to expose the thin electrolyte layer (2) to thermally induced mechanical stresses. The active cell element, a combination of two porous and metallic electrodes (1, 3) with a gastight oxide electrolyte layer (2), are preferably produced by the vacuum plasma spray process.

Abstract: An electrolyte cathode assembly for a solid electrolyte fuel cell intended for operation at high temperature comprises a solid ceramic electrolyte gas-tight body which is capable of conducting oxygen ions, the electrolyte having in contact with it and secured to its surface a layer of electron-conducting material which is a compact layer made up of a mixture of doped indium oxide In.sub.2 O.sub.3 and a ceramic material which is capable of conducting both oxygen ions and electrons at the cell operating temperature, the said layer being covered with a surface layer, which is permeable to gas, of doped indium oxide In.sub.2 O.sub.3 having a dendritic structure.

Abstract: An electrolyte cathode assembly for a solid electrolyte fuel cell suitable for operation at high temperatures comprises a gas-tight body made of a solid ceramic electrolyte which is capable of conducting oxygen ions having in contact with it and secured to it a layer of electron-conducting material which is a mixture of doped indium oxide In.sub.2 O.sub.3 and a ceramic material which is capable of conducting oxygen ions at the cell operating temperature, the said layer being covered by a compact surface layer of a ceramic material which is capable of conducting both electrons and oxygen ions.

Abstract: A biocompatible glass ceramic consisting of a vitreous matrix containing vitreous inclusions in which are dispersed crystals of a compound, isomorphous with hydroxyapatite, of at least the following elements: calcium, a lanthanide or yttrium, silicon, phosphorus and oxygen, these inclusions being surrounded by crystals of at least one compound belonging to the group consisting of Na.sub.2 Ca.sub.2 Si.sub.3 O.sub.9 and Ca.sub.3 (PO.sub.4).sub.2.2 Ca.sub.2 SiO.sub.4, can be used to construct artificial bone segments etc in bone surgery and bonds firmly with the new bone tissue without causing inflammation.

Abstract: An electrolyte-electrode assembly for a combustible battery comprising a ceramic solid electrolyte conductive to oxygen ions and impermeable to gas. An electrode is secured on one surface of the electrolyte and comprises a porous layer of doped indium oxide composed of dendrites which form trunks having a diameter between 500 and 10,000 A and whose principal axes are penpendicular to the surface of the electrolyte. A continuous layer of ceramic material, conductive to oxygen ions and electrons is interposed between the electrolyte and the electrode and is solid therewith. The electrode can have a second porous layer formed of granules of at least one chromite having the formula:T.sub.1-y Sr.sub.a Ca.sub.b CrO.sub.3in which T is a rare earth or yttrium or a mixture of these elements and y, a and b are numbers between 0 and 1, being able to take the value 0 and satisfying the equation a + b = y.

Abstract: An electrical storage battery, providing high energy density, comprises an anode compartment containing at least one reducer metal and a cathode compartment containing an electrically conductive solution of at least one salt of the said metal in a non-aqueous solution. The solution is in contact with at least one electron acceptor material and the two compartments are separated by a wall which is sealed to the fluids and is constituted by a solid material that allows the migration, at ambient temperature, of the reducer metal of the anode in the form of ions. The electron acceptor substance is soluble in the solution contained in the cathode compartment in the reduced form thereof, as well as in its original form. The battery enables storage of high power density energy in terms of both mass and volume.