Electrolyte paste for molten carbonate fuel cells

Details Electrolyte paste for molten carbonate fuel cells Electrolyte paste for molten carbonate fuel cells

1994-06-23

1995-11-21

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 29, 429 44, 429 46, 429 63, H01M 814

Patent

active

054685737

ABSTRACT:
The electrolyte matrix and electrolyte reservoir plates in a molten carbonate fuel cell power plant stack are filled with electrolyte by applying a paste of dry electrolyte powder entrained in a dissipatable carrier to the reactant flow channels in the current collector plate. The stack plates are preformed and solidified to final operating condition so that they are self sustaining and can be disposed one atop the other to form the power plant stack. Packing the reactant flow channels with the electrolyte paste allows the use of thinner electrode plates, particularly on the anode side of the cells. The use of the packed electrolyte paste provides sufficient electrolyte to fill the matrix and to entrain excess electrolyte in the electrode plates, which also serve as excess electrolyte reservoirs. When the stack is heated up to operating temperatures, the electrolyte in the paste melts, the carrier vaporizes, or chemically decomposes, and the melted electrolyte is absorbed into the matrix and electrode plates.

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