Back to results
US 7,045,237 B2Granted
Textured electrolyte for a solid oxide fuel cell
AssigneeIon America Corporation
InventorsK. R. Sridhar, Dien Nguyen
Life of this patent
Estimating the term…
Abstract
A ceramic electrolyte for a solid oxide fuel cell includes at least one non-uniform surface portion. Preferably, the electrolyte surface is textured.
Claims33
A ceramic electrolyte for a solid oxide fuel cell, comprising at least one non-uniform surface portion, wherein:
- the electrolyte is substantially flat;
- and
- the at least one non-uniform surface portion of the electrolyte comprises a textured surface which is located only in an active portion of the electrolyte, while a peripheral portion of the electrolyte does not contain the textured surface.
A method of making a ceramic electrolyte for a solid oxide fuel cell, comprising:
- providing a substantially flat ceramic electrolyte;
- and
- texturing at least a portion of one surface of the ceramic electrolyte by lapping, grinding or polishing at least one surface of the electrolyte.
A method of making a ceramic electrolyte for a solid oxide fuel cell by tape casting, comprising:
- providing a slurry containing a ceramic powder onto a textured material;
- spreading the slurry using a blade to form a green tape;
- and
- sintering the green tape to form a substantially flat ceramic electrolyte containing at least a textured surface portion.
1 more element
A method of making a ceramic electrolyte for a solid oxide fuel cell, comprising:
- providing an electrolyte precursor material;
- texturing at least a portion of one surface of the electrolyte precursor material by embossing at least a portion of one surface of the electrolyte precursor material, wherein the step of embossing comprises rolling a body having a textured surface against the electrolyte precursor material;
- and
- sintering the electrolyte precursor material to form a substantially flat ceramic electrolyte containing at least a textured surface portion.
1 more element
Dependencies are inferred from the claim text.