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A method and an apparatus for making straight fuel cell tubes are disclosed. Extruded tubes comprising powders of fuel cell material and a solvent are dried by rotating the extruded tubes. The rotation process provides uniform circumferential drying which results in uniform linear shrinkage of the t

A method and an apparatus for making straight fuel cell tubes are disclosed. Extruded tubes comprising powders of fuel cell material and a solvent are dried by rotating the extruded tubes. The rotation process provides uniform circumferential drying which results in uniform linear shrinkage of the tubes. The resultant dried tubes are very straight, thereby eliminating subsequent straightening steps required with conventional processes. The method is particularly useful for forming inner air electrode tubes of solid oxide fuel cells.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of drying a fuel cell tube consisting essentially of:forming a tube from a mixture comprising ceramic fuel cell powder and solvent; androtating the formed tube substantially about an axis of the tube to at least partially remove the solvent from the formed tube

[ What is claimed is:] [1.]1. A method of drying a fuel cell tube consisting essentially of:forming a tube from a mixture comprising ceramic fuel cell powder and solvent; androtating the formed tube substantially about an axis of the tube to at least partially remove the solvent from the formed tube to thereby produce a dried unsintered fuel cell tube.