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Enhancing performance of stabilized bismuth oxide-based cathodes via infiltration process for LT-SOFCs

Title
Enhancing performance of stabilized bismuth oxide-based cathodes via infiltration process for LT-SOFCs
Authors
Park, Jin WanYun, Byeong HyeonJoh, Dong WooLee, Kang Taek
DGIST Authors
Park, Jin Wan; Yun, Byeong Hyeon; Joh, Dong Woo; Lee, Kang Taek
Issue Date
2015
Citation
14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage, 68(1), 957-963
Type
Conference
Article Type
Conference Paper
ISBN
9780000000000
ISSN
1938-5862
Abstract
Nanostructured La0.8Sr0.2MnO3-δ (LSM) - Er0.4Bi1.6O3 (ESB) composite cathodes for lower temperature solid oxide fuel cells (LT-SOFCs) were developed via infiltration process. The perovskite phase of LSM nanoparticles deposited on the porous ESB scaffold was confirmed by X-ray diffraction (XRD). The microstructural evolution of the established nanostructures was observed using scanning electron microscope (SEM). The cathodic polarization resistances of the developed cathodes on GDC were measured by electrochemical impedance spectroscopy (EIS) and compared to the conventional LSM-ESB composite cathodes. The resultant area specific resistance (ASR) of the LSM infiltrated ESB cathodes was 1.24 Ω-cm2 at 600°C, which is ∼34% lower than that of the conventional LSM-ESB composite cathode (1.88 Ω-cm2), primarily due to enhanced ORR activities with increased TPB density in the nanostructured cathodes. © The Electrochemical Society.
URI
http://hdl.handle.net/20.500.11750/3692
DOI
10.1149/06801.0957ecst
Publisher
Electrochemical Society Inc.
Related Researcher
  • Author Lee, Kang Taek Advanced Energy Conversion and Storage Lab(AECSL)
  • Research Interests
Files:
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Collection:
ETC2. Conference Papers


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