Effect of the co-spun anode functional layer on the performance of the direct-methane microtubular solid oxide fuel cells

• Published in: Journal of power sources Vol. 247; pp. 587 - 593
• Main Authors: XIUXIA MENG, XUN GONG, YIMEI YIN, NAITAO YANG, XIAOYAO TAN, MA, Zi-Feng
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier 01.02.2014
• Subjects: Applied sciences; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Energy; Energy. Thermal use of fuels; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc; Exact sciences and technology; Fuel cells; Materials; Methane; Anode; Co-spinning-sintering; Electrode material; Carbon; Solid oxide fuel cell; Resistance; Dual-layer hollow fiber; Sintering; Hollow fiber; Anode functional layer; Spinning; Performance; Micro tubular solid oxide fuel cell; Carbon-resistance
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2013.08.133

NiO-YSZ/porous YSZ (NiO-YSZ/p-YSZ) dual-layer hollow fibers have been fabricated by a co-spinning-sintering method, on which a dense YSZ films has been formed by a dip-coating and sintering process. A LSM-YSZ ink has been dip-coated on the dense YSZ films as cathode, while the Cu-CeO2 carbon-resistant catalyst has been impregnated in the p-YSZ layer to form double-anode supported micro tubular fuel cells (MT-SOFCs). The thickness of the Ni-YSZ layer, so called anode functional layer (AFL), is controlled from 74 mu m to 13 mu m by varying the spinning rates of the NiO-YSZ dopes. The maximum power density of an MT-SOFC, which is fabricated based on a thin co-spun AFL, reaches 566 mW cm-2 operated at 850 degree C fed with dry methane, and is stably operated for 85 h without power declination.