Electrochemical study of lithiated transition metal oxide composite for single layer fuel cell
2015 (English)In: Journal of Power Sources, ISSN 0378-7753, Vol. 286, 388-393 p.Article in journal (Refereed) Published
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.
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
IdentifiersURN: urn:nbn:se:kth:diva-167691DOI: 10.1016/j.jpowsour.2015.03.187ISI: 000355027400044ScopusID: 2-s2.0-84926612503OAI: oai:DiVA.org:kth-167691DiVA: diva2:816077
QC 201506022015-06-022015-05-222015-08-17Bibliographically approved