Abstract
This study investigates the use of various sacrificial template materials in the form of a solid rod, including wood, carbon fiber, polyamide, resin and polylactic acid (PLA), for fabricating anode supports in microtubular solid oxide fuel cells (SOFCs) via tape casting and isostatic pressing. Anode support strips, produced via tape casting, are wound around these sacrificial rods. The rods are then burnout through co-sintering to yield microtubular anode supports. The results highlight PLA as a particularly promising material due to its balance of cost and performance. A novel rod design involving hollow PLA pipe is then explored to enhance the fabrication process. The anode support tape length or the wall thickness of anode support microtube is also considered. Microtubular cells are fabricated on the anode supports by dip coating other cell layers, and electrochemical and microstructural investigations are carried out. The final cell provides 0.365 W/cm2 maximum power density at 800 °C under 0.3 NL/min hydrogen flow and stationary air. Moreover, a patterned microtubular anode support is successfully fabricated using a 3D printed PLA tube featuring an array of dimples. The overall findings indicate that the proposed methodology not only simplifies the manufacturing process but also supports the feasibility of producing high-performance microtubular SOFCs with enhanced electrolyte-electrode interfaces through patterned anode designs.
Published Version
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