Optimization of ScSZ/GDC bilayer thin film electrolyte for anodic aluminum oxide supported low temperature solid oxide fuel cells.

Author(s) Cho, G.Young; Kim, Y.; Hong, S.Wook; Yu, W.; Kim, Y.B.; Cha, S.Won
Journal Nanotechnology
Date Published 2018 Aug 24
Abstract

Due to the poor chemical stability of CeO-based materials, doped CeO electrolytes are generally used as a stabilized ZrO protection layer/doped CeO electrolyte bilayer structure. Since the ionic conductivity of stabilized ZrO materials is lower than that of doped CeO materials, the thickness of the ZrO protective layer needs to be optimized. Thus, in this study, nano-porous anodic aluminum oxide template based scandia stabilized zirconia (ScSZ)/gadolinia doped ceria (GDC) bilayer electrolyte low temperature solid oxide fuel cells (LT-SOFCs) are successfully fabricated and investigated. The optimized thickness of the ScSZ protection layer is revealed by physical and electrochemical characterizations to maximize the performance of LT-SOFCs. The 160 nm ScSZ/400 nm GDC bilayer electrolyte LT-SOFC achieves a maximum power density of 252 mW · cm and an open circuit voltage of 1.02 V OCV at 450 °C.

DOI 10.1088/1361-6528/aac132
ISSN 1361-6528
Citation Cho GY, Kim Y, Hong SW, Yu W, Kim Y-, Cha SW. Optimization of ScSZ/GDC bilayer thin film electrolyte for anodic aluminum oxide supported low temperature solid oxide fuel cells. Nanotechnology. 2018;29(34):345401.

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