Patent ID: 6974516

Claim:
A method of making a ceramic tube of wall thickness T tube with electrodes thereon suitable as a tubular reaction chamber for a fuel cell, the method comprising: wrapping a first electrode material round a mandrel so as to form a first tubular surface; wrapping a green ceramic material, having a thickness T wrap that is thinner than the thickness T tube of the ceramic tube, around the mandrel over the first tubular surface a multiple n times so as to form a second tubular surface; wrapping a second electrode material around the mandrel over the second tubular surface so as to form a third tubular surface, wherein the fast electrode material, the green ceramic material and the second electrode material are each selected from sheet material or tape material; laminating together the wrap of the first electrode material, the n wraps of the green ceramic material and the wrap of the second electrode material under pressure while still wrapped about the mandrel; and, in either sequence, both separating the mandrel from the laminated wraps or the ceramic tube; and sintering the laminated wraps to produce a laminated ceramic tube of wall thickness n×T wrap =T tube having an inner first electrode and an outer second electrode.