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US 6,551,735 B2Granted
Honeycomb electrode fuel cells
AssigneeCorning Incorporated
InventorsMichael E. Badding, John F. Wight, Jr.
Life of this patent
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Abstract
Solid oxide fuel cells (SOFC) based on mechanically durable honeycomb electrodes supporting thin electrolyte and counter electrode layers in selected honeycomb channels provide dependable operation and high volume power density through extended use cycles.
Claims8
A solid oxide fuel cell element comprising:
- an integral porous conductive metallic anode of honeycomb shape incorporating interconnecting channel walls forming parallel channels extending from a first face to a second face of the honeycomb shape;
- plural electrolyte layers disposed on the walls of a plurality of the parallel channels;
- and
- plural cathode layers disposed the electrolyte layers, each channel in the plurality of channels sharing at least one channel wall with a channel not provided with electrolyte and cathode layers.
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A method for making a solid oxide fuel cell element comprising the steps of:
- providing an integral anode of honeycomb shape composed of porous conductive metal and incorporating interconnecting channel walls forming parallel channels extending from a first face to a second face of the honeycomb shape;
- providing electrolyte layers on the walls of selected channels, each selected channel sharing at least one channel wall with a channel not provided with an electrolyte layer;
- and
- providing counter-electrode layers on the electrolyte layers.
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Dependencies are inferred from the claim text.