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Electrochemical enhancement of GDC(Gd2O3-doped CeO2)/SSC (SmxSr1-xCoO3) composite cathodes in solid oxide fuel cells prepared through the sonochemical synthesis of nanocrystalline GDC electrolytes
- Authors
- Kim, Eui-Hyun; Bae, Seung-Muk; Hwang, Jin-Ha
- Issue Date
- Dec-2014
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Sonochemical synthesis; GDC electrolyte; Electrode polarization; Impedance spectroscopy
- Citation
- CERAMICS INTERNATIONAL, v.40, no.10, pp.15875 - 15880
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 40
- Number
- 10
- Start Page
- 15875
- End Page
- 15880
- ISSN
- 0272-8842
- Abstract
- High-frequency sonication at 20 kHz was employed to coat micro-scale SmxSr1-xCoO3 (SSC) particles with nano-scale Gd2O3-doped CeO2 (GDC) electrolyte materials. The composition-controlled GDC/SSC composite cathodes were evaluated simultaneously using scanning electron microscopy and electrochemical impedance spectroscopy. The microstructurally optimized SSC/GDC cathode composites exhibited minimal electrode polarization compared to the pristine mixed ionic electronic conducting SSC materials. The artificially designed micro/nano-composite cathode materials can be employed in intermediate-temperature solid oxide fuel cells. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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Related Researcher
- Hwang, Jin ha
- Engineering (Advanced Materials)