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Electrochemical study of lithiated transition metal oxide composite for single layer fuel cell
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
2015 (English)In: Journal of Power Sources, ISSN 0378-7753, Vol. 286, 388-393 p.Article in journal (Refereed) Published
Abstract [en]

This study analyzed the effect of various semiconductors of transition metal oxides in modified lithiated NiO on the electrochemical performance of a single layer fuel cell (SLFC). A typical ionic conductor Ce0.8Sm0.2O2-δ (SDC) and three types of semiconductors Li0.3Ni0.6Cu0.07Sr0.03O2-δ (LNCuS), Li0.3Ni0.6Mn0.07Sr0.03O2-δ (LNMnS) and Li0.3Ni0.6Co0.07Sr0.03O2-δ (LNCoS), were the fundamental components of the SLFCs. The components were characterized by using X-ray diffraction (XRD), a scanning electron microscope (SEM), and an energy-dispersive X-ray spectrometer (EDS). The stability of the synthesized materials was evaluated using thermal gravity analysis (TGA). The ohmic resistances at 500 °C were 0.36, 0.48 and 0.58 Ω cm2 for 6SDC-4LNMnS, 6SDC-4LNCoS and 6SDC-4LNCuS, respectively. Among the three SLFCs, the single cell with 6SDC-4LNMnS achieves the highest power density (422 mW cm-2) but the lowest temperature stability, while the single cell with 6SDC-4LNCuS achieved the lowest power density (331 mW cm-2) but the highest temperature stability during the operation temperature.

Place, publisher, year, edition, pages
2015. Vol. 286, 388-393 p.
Keyword [en]
Power density, Semiconductors, Single layer fuel cell, Transition mental oxides, Fuel cells, Lithium, Manganese, Nickel, Ohmic contacts, Scanning electron microscopy, Semiconductor materials, Spectrometers, Transition metals, X ray diffraction, X ray spectrometers, Electrochemical performance, Electrochemical studies, Energy dispersive x-ray spectrometers, Fundamental component, Power densities, Single layer, Thermal gravity analysis, Transition-metal oxides, Transition metal compounds
National Category
Energy Engineering
URN: urn:nbn:se:kth:diva-167691DOI: 10.1016/j.jpowsour.2015.03.187ISI: 000355027400044ScopusID: 2-s2.0-84926612503OAI: diva2:816077

QC 20150602

Available from: 2015-06-02 Created: 2015-05-22 Last updated: 2015-08-17Bibliographically approved

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Muhammad, Afzal J.Zhu, Bin
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