Geometrical scale dependency of thin film solid oxide fuel cells

Yeageun Lee1, Jianhuang Zeng, Chunhua Zheng, Wonjong Yu, Suk Won Cha#, Jong Dae Bae#, Ikwhang Chang#

Abstract
To study the geometrical scale dependency of thin film solid oxide fuel cells (SOFCs), we fabricated three thin films SOFCs which have the same cross-sectional structure but different electrode areas of 1 mm2, 4 mm2 and 9 mm2. Since the activation and ohmic losses of SOFCs depend on their active region, we examined the variations of the power density of the cells with a Pt/YSZ/Pt structure and simulated the power density variations using the COMSOL software package.