Influence of the grain size of samaria-doped ceria cathodic interlayer for enhanced surface oxygen kinetics of low-temperature solid oxide fuel cell
- Title
- Influence of the grain size of samaria-doped ceria cathodic interlayer for enhanced surface oxygen kinetics of low-temperature solid oxide fuel cell
- Author
- 김영범
- Keywords
- Samaria-doped ceria; Composite electrolyte; Oxygen activation; Grain boundary; Solid oxide fuel cell; YTTRIA-STABILIZED ZIRCONIA; POLYCRYSTALLINE MATERIALS; BOUNDARY DIFFUSION; EXCHANGE-REACTIONS; SOFC; ELECTROLYTES; PERFORMANCE; ELECTRODES; TRANSPORT
- Issue Date
- 2014-06
- Publisher
- ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
- Citation
- Journal of the European Ceramic Society, Vol.34 No.15 [2014], p 3763-3768
- Abstract
- The catalytic role and grain boundary effect of samaria-doped ceria (SDC) interlayers were investigated. To see the catalytic role, an SDC interlayer was deposited on a single crystalline YSZ (100) substrate by using the pulsed laser deposition (PLD) for an epitaxial film. The grain boundary effects were analyzed with SDC interlayers with various grain sizes on polycrystalline YSZ substrates. As a result, the membrane electrode assembly (MEA) with an epitaxial SDC interlayer exhibited a peak power density that was twice that of a YSZ controlled MBA. More detailed experiments were conducted with MEAs with various grain sizes. In the electrochemical analysis, the MEA with a nano grain SDC interlayer showed an increased maximum power density and lower cathodic impedance. This result suggests that the performance of low temperature solid oxide fuel cells (LT-SOFCs) could be enhanced by applying an SDC interlayer with nano grains for the enhanced oxygen reduction reaction. (C) 2014 Elsevier Ltd. All rights reserved.
- URI
- http://www.sciencedirect.com/science/article/pii/S0955221914002994
- ISSN
- 0955-2219; 1873-619X
- DOI
- 10.1016/j.jeurceramsoc.2014.05.028
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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