Method for making a fuel cell

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United States of America Patent

PATENT NO 8715886
SERIAL NO

12892339

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Abstract

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The invention is a novel solid oxide fuel cell (SOFC) stack comprising individual bi-electrode supported fuel cells in which an electrolyte layer is supported between porous electrodes. The porous electrodes may be made from graded pore ceramic tape that has been created by the freeze cast method followed by freeze-drying. Each piece of graded pore tape later becomes a graded pore electrode scaffold that, subsequent to sintering, is made into either an anode or a cathode. The electrode scaffold comprising the anode includes a layer of liquid metal. The pores of the electrode scaffolds gradually increase in diameter as the layer extends away from the electrolyte layer. As a result of this diameter increase, any forces that would tend to pull the liquid metal away from the electrolyte are reduced while maintaining a diffusion path for the fuel. Advantageously, the fuel cell of the invention may utilize a hydrocarbon fuel without pre-processing to remove sulfur.

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Patent Owner(s)

Patent OwnerAddress
UNITED STATES OF AMERICA GOVERNMENT ADMINISTRATOR OF NASA300 E STREET SW WASHINGTON DC 20546-0001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cable, Thomas L Olmsted Falls, US 34 1266
Farmer, Serene C Sagamore Hills, US 2 17
Setlock, John A Grafton, US 6 19

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