Journal of Power Sources, Vol.224, 37-41, 2013
Electrochemical performance and thermal cyclicability of industrial-sized anode supported planar solid oxide fuel cells
Industrial-sized planar anode-supported SOFC cells with a cell dimension of 15 x 15 x 0.1 cm and an active area of 13 x 13 cm(2) are fabricated through a processing route of tape casting-screen printing-cofiring. Electrochemical performance and thermal cyclicability of the cell are evaluated in a single cell stack at 750 degrees C with H-2 as the fuel and air as the oxidant. With a gas flow rate of 3 L min(-1), the initial open circuit voltage (OCV) is 1164 mV, and the stack demonstrates a power density of 380 mW cm(-2) at 473 mA cm(-2) with an extrapolated maximum power output of 100 W. After three thermal cycles, the reduction of the stack output voltage is around 5%, and the OCV is maintained at a level above 1145 mV. Based on the obtained results, issues related to stack performance, such as cell quality, contact resistance and sealing, are discussed. (C) 2012 Elsevier By. All rights reserved.
Keywords:Solid oxide fuel cell;Industrial-sized cell;Electrochemical performance;Thermal cyclicability