(WO9510125-A1)      An interconnect placed between stacked electrolyte elements comprises (i) first and second facial surfaces, (ii) a smooth level margin around the perimeter of the first facial surface, (iii) two parallel manifold channels along opposite sides of the margin each of which breach the margin at one place and (iv) a number of gas flow channels which connect the manifold channels. The margin forms a seal between the edge of the interconnect and the edge of an electrolyte element. Also claimed is an interconnect as above where smooth level ridges between the gas flow channels form surfaces for bonding the central areas of the interconnect with the adjacent electrolyte plate.    USE -   The interconnects are used for separating and establishing gas flow channels between electrolyte elements of solid state ion-conducting devices including fuel cells, steam electrolysers, oxygen concentrators and other types of electrochemical reactors.    ADVANTAGE -   The interconnect forms an effective gas-tight seal, is simple to make and has a uniform gas-flow path length resulting in improved fuel utilisation.    (JP9503614-W)      An interconnect placed between stacked electrolyte elements comprises (i) first and second facial surfaces, (ii) a smooth level margin around the perimeter of the first facial surface, (iii) two parallel manifold channels along opposite sides of the margin each of which breach the margin at one place and (iv) a number of gas flow channels which connect the manifold channels. The margin forms a seal between the edge of the interconnect and the edge of an electrolyte element. Also claimed is an interconnect as above where smooth level ridges between the gas flow channels form surfaces for bonding the central areas of the interconnect with the adjacent electrolyte plate.    USE -   The interconnects are used for separating and establishing gas flow channels between electrolyte elements of solid state ion-conducting devices including fuel cells, steam electrolysers, oxygen concentrators and other types of electrochemical reactors.    ADVANTAGE -   The interconnect forms an effective gas-tight seal, is simple to make and has a uniform gas-flow path length resulting in improved fuel utilisation.