Method of forming a solid oxide tube coupled to a current collector

A method for forming a solid oxide fuel cell brazed to a current collector, the method comprising:

• providing a solid oxide fuel cell tube having an interior anode, an exterior cathode and an electrolyte;
• inserting an anode current collector into an open end of the interior anode, the anode current collector being mechanically compliant and having a low resistance stem portion and a brush portion extending radially out from the stem portion, wherein the brush portion includes a plurality of wire loops radiating from the stein portion, each wire loop extending directly from the stem portion to a radially distal looped anode contact area;
• disposing a primary brazing slurry in contact with both the interior anode portion of the solid oxide fuel cell tube and the looped anode contact areas of the anode current collector;
• heating the solid oxide fuel cell tube, the anode current collector, and the primary brazing shiny above a brazing temperature and subsequently cooling the solid oxide fuel cell tube, the anode current collector and the primary brazing slurry below the brazing temperature to form a brazed joint between the interior anode portion of the solid oxide fuel cell and the looped anode contact areas of the anode current collector disposing a secondary brazing slurry to the solid oxide fuel cell primarily brazed to the anode current collector in a secondary brazing slurry application process;
• and
• heating the solid oxide fuel cell primarily brazed to the anode current collector and the secondary brazing slurry above the brazing temperature and subsequently cooling the solid oxide fuel cell primarily brazed to the anode current collector and the secondary brazing slurry below the brazing temperature to form the solid oxide fuel cell secondarily brazed to the anode current collector.