Molten carbonate fuel cell start-up process

Details Molten carbonate fuel cell start-up process Molten carbonate fuel cell start-up process

H - Electricity

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H01M 8/04 (2006.01) H01M 8/14 (2006.01) H01M 8/22 (2006.01)

Patent

CA 2030605

ABSTRACT OF THE DISCLOSURE A molten carbonate fuel cell start-up process wherein at least one cell unit having a metallic cathode, a metallic anode, and green tapes of electrolyte matrix and electrolyte carbonate between the cathode and anode is heated to temperatures about 250° to about 350°C in the presence of oxygen-containing gas with continued heating to temperatures above the melting point of the carbonate electrolyte in the presence of inert gas and about 0.5 to about 10 mole percent hydrogen, based upon the total gas composition, and maintaining temperatures above the melting point of the carbonate electrolyte for a time sufficient for the carbonate to distribute itself to the cell components, and then introducing oxidant gas to contact the cathode and fuel gas to contact the anode for operation of the fuel cell. The start-up process according to this invention provides simultaneous oxidation and lithiation of the cathode and provides good electrical conductivity and catalytic properties of the cathode for stable fuel cell operation.

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