Fabrication of 100 Centimeter Square Metal-Supported Solid Oxide Fuel Cell Using Thermal Plasma Technique

• Published in: Meeting abstracts (Electrochemical Society) Vol. MA2017-03; no. 1; p. 361
• Main Authors: Yang, Sheng-Fu, Hwang, Chang-Sing, Tsai, Chun-Huang, Chang, Chun-Liang, Wu, Ming-Hsiu, Fu, Cheng-Yun, Lee, Ruey-Yi
• Format: Journal Article
• Language: English
• Published: 01.07.2017
• ISSN: 2151-2043; 2151-2035
• DOI: 10.1149/MA2017-03/1/361

In this study, the large-scale mold for compression molding process is prepared and a compression load of 120 ton is applied to form a porous alloy specimen with dimension of 12×12×1.2 cm. The carbon is used as pyrolyzable filler in the period of manufacturing processes in order to produce porous interconnected networks of molybdenum (Mo)-containing nickel (Ni)-based alloy. The specimens are sintered in hydrogen at the temperature of 1250°C to obtain porous alloy substrate. The flexural strength of porous alloy supporting component is measured in this work. The strength of porous alloy substrate (Sintered at 1250°C) in three-point flexure at 25°C and 750°C are 188 MPa and 76.5 MPa, respectively. Metal-supported solid oxide fuel cells (MS-SOFCs) are fabricated by thermal plasma spraying technique and the anode (Ce 0.55 La 0.45 O 2-δ -NiO,  LDC-NiO), electrolyte (La 0.8 Sr 0.2 Ga 0.8 Mg 0.2 O 3-δ , LSGM) and cathode (Sm 0.5 Sr 0.5 CoO 3- δ ,SSC) functional layers are deposited onto porous alloy substrate. The 10×10 cm 2 MS-SOFC with effective electrode area of 81 cm 2 shows the open circuit voltages is 1.09 V at 700°C. The measured maximum output power densities (@0.76V) of this cell has reached 588 mW/cm 2 at 700°C by employing hydrogen as fuel and air as oxidant.