In-situ fabrication of micro-channeled multi tubular solid oxide fuel cell using multi-pass extrusion process

In-situ micro-channeled multi tubular solid oxide fuel cell(SOFC) was fabricated using multi-pass extrusion process with out side diameter of 2.7 mm and active length of 5 mm that contained 61 individual cells. Cell materials used in this work were NiO-YSZ (50:50 vol.%), 8 mol% yttria-stabilized zirconia(8YSZ), La_0.8 Sr_0.2MnO₃(LSM) as anode, electrolyte, and cathode, respectively. The arrangement of each electrode and electrolyte layer in green bodies showed uniformity and integrity after extrusion and sintering. The XRD analysis confirmed that no reaction phases appeared and the microstructure of the electrolyte was fairly dense (relative density > 96%) after sintering.