Patent ID: 8163436
Filing Date: 2012-04-24
Classification: C03C,H01M,Y02E,Y02P

Abstract:
1. Solid oxide fuel cell stack obtainable by a process comprising the steps of: (a) forming a first fuel cell stack assembly by alternating at least one interconnector plate with at least one fuel cell unit, in which each fuel cell unit comprises an anode, a cathode and an electrolyte arranged between the anode and cathode, and providing a glass sealant in between the interconnector plate and each fuel cell unit, in which the glass sealant has the composition: 50-70 wt % SiO (b) converting said first fuel cell stack assembly into a second assembly having a glass sealant of thickness 5-100 μm by heating said first assembly to a temperature of 500° C. or higher and subjecting the cell stack to a load pressure of 2 to 20 kg/cm (c) converting said second assembly into a final fuel cell stack assembly by cooling the second assembly of step (b) to a temperature below that of step (b).