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Composite electrolyte with proton conductivity for low-temperature solid oxide fuel cell
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. Department of Physics, COMSATS Institute of Information Technology, Lahore, Pakistan.
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2015 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 107, no 18Article in journal (Refereed) PublishedText
Abstract [en]

In the present work, cost-effective nanocomposite electrolyte (Ba-SDC) oxide is developed for efficient low-temperature solid oxide fuel cells (LTSOFCs). Analysis has shown that dual phase conduction of O-2 (oxygen ions) and H+ (protons) plays a significant role in the development of advanced LTSOFCs. Comparatively high proton ion conductivity (0.19 s/cm) for LTSOFCs was achieved at low temperature (460°C). In this article, the ionic conduction behaviour of LTSOFCs is explained by carrying out electrochemical impedance spectroscopy measurements. Further, the phase and structure analysis are investigated by X-ray diffraction and scanning electron microscopy techniques. Finally, we achieved an ionic transport number of the composite electrolyte for LTSOFCs as high as 0.95 and energy and power density of 90% and 550 mW/cm2, respectively, after sintering the composite electrolyte at 800°C for 4 h, which is promising. Our current effort toward the development of an efficient, green, low-temperature solid oxide fuel cell with the incorporation of high proton conductivity composite electrolyte may open frontiers in the fields of energy and fuel cell technology.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2015. Vol. 107, no 18
National Category
Materials Chemistry
URN: urn:nbn:se:kth:diva-181974DOI: 10.1063/1.4934940ISI: 000364580800068ScopusID: 2-s2.0-84946593594OAI: diva2:902933
Swedish Research Council, 621-2011-4983

QC 20160212

Available from: 2016-02-12 Created: 2016-02-11 Last updated: 2016-02-12Bibliographically approved

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