Patent ID: 7645535
Filing Date: 2010-01-12
Classification: C04B,H01M,Y02E

Abstract:
1. A method for assembling solid oxide fuel cells into an integrated solid oxide fuel cell stack of the type having a plurality of cells each with a cathode and an anode separated by an electrolyte and a plurality of metallic, non-ceramic interconnect plates, said method comprising the steps of: (a) pre-treating the surfaces of said metallic interconnect plates by applying an oxide coating comprising LSM, LSF, LSC, La (b) pre-treating the surfaces of said anodes to improve the bonding properties by applying an anode paste or a coating of organo-metallic compounds comprising Bi, Ni, Mn, Cu, Ce, and Co; (c) introducing a cathode bonding agent between each one of said cathodes and the cathode side of each one of said metallic interconnect plates; (d) introducing an anode bonding agent between each one of said anodes and the anode side of each one of said metallic interconnect plates; (e) combining said plurality of electrodes and metallic interconnect plates having said bonding agents applied thereon into an integrated oxide fuel cell stack; and (f) uniformly heating said integrated solid oxide fuel cell stack without applying a compressive load to a temperature in the range of about 600-1000° C. and for a period of time sufficient to permanently bond said metallic interconnect plates to said cathodes and anodes.