Fabrication of tubular solid oxide fuel cells by solvent‐assisted lamination and co‐firing a rolled multilayer tape cast

Abstract

AbstractThis study presents preliminary results for tubular anode‐supported solid oxide fuel cells (SOFCs) fabricated by a novel method based on tape casting. A multilayer tape cast was prepared by successive casting of the anode support, anode functional layer, and electrolyte. The tape cast was rolled into a tube, and the ends of the tape were joined by solvent‐assisted lamination. The sample was co‐fired at 1400°C, followed by screen printing and sintering of the cathode at 1150°C. The electrochemical performance of the tubular cell was evaluated in N2/H2 gas at 750°C. The cell generated a maximum power density of 90 mW/cm2. The scanning electron microscope (SEM) micrographs after the electrochemical tests confirmed that the solvent‐assisted lamination resulted in stable joining without delamination. Although the process and performance have yet to be optimized, the use of multilayer tape casting, solvent‐assisted lamination, and co‐firing is expected to make this method advantageous for low‐cost mass production of tubular SOFCs.