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Ce-0.8(SmZr)(0.2)O-2-carbonate nanocomposite electrolyte for solid oxide fuel cell
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
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2014 (English)In: International journal of energy research (Print), ISSN 0363-907X, E-ISSN 1099-114X, Vol. 38, no 4, 524-529 p.Article in journal (Refereed) Published
Abstract [en]

A nanocomposite Zr/Sm-codoped ceria electrolyte coated with K2CO3/Na2CO3 was synthesized by a coprecipitation method. The electrochemical study of the two-phase nanocomposite electrolytes with carbonate coated on the doped ceria shows high oxygen ion mobility at low temperatures (300-600 degrees C). The interface between the two constituent phases was studied by electrochemical impedance spectroscopy. Ionic conductivities were also measured with electrochemical impedance spectroscopy. The morphology and structure of composite electrolyte were characterized using field-emission scanning electron microscopy and X-ray diffraction. The fuel cell power density is 700 mW cm(-2), and an open-circuit voltage of 1.00 V is achieved at low temperatures (400-550 degrees C). This codoped approach with a second phase provides a good indication regarding overcoming the challenges of solid oxide fuel cell technology.

Place, publisher, year, edition, pages
2014. Vol. 38, no 4, 524-529 p.
Keyword [en]
composite, zirconia, codoped ceria, morphology
National Category
Energy Engineering
URN: urn:nbn:se:kth:diva-144362DOI: 10.1002/er.3150ISI: 000332989900014ScopusID: 2-s2.0-84897610984OAI: diva2:713412

QC 20140423

Available from: 2014-04-23 Created: 2014-04-22 Last updated: 2014-04-23Bibliographically approved

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Raza, RizwanZhu, Bin
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