Search Results - "Fleig, J"

The grain boundary impedance of random microstructures: numerical simulations and implications for the analysis of experimental data by Fleig, J.

“…The grain boundary impedance of polycrystalline materials is usually analyzed in terms of a simplified microstructure composed of cubic-shaped grains. In order…”
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Improved Performance of Serially Connected Li-Ion Batteries With Active Cell Balancing in Electric Vehicles by Einhorn, M., Roessler, W., Fleig, J.

“…This paper presents an active cell balancing method for lithium-ion battery stacks using a flyback dc/dc converter topology. The method is described in detail,…”
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On the width of the electrochemically active region in mixed conducting solid oxide fuel cell cathodes by Fleig, J.

“…The width of the electrochemically active zone in a mixed conducting solid oxide fuel cell (SOFC) cathode, i.e. the spatial extension of the…”
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Effect of pulse-current-based protocols on the lithium dendrite formation and evolution in all-solid-state batteries by Reisecker, V., Flatscher, F., Porz, L., Fincher, C., Todt, J., Hanghofer, I., Hennige, V., Linares-Moreau, M., Falcaro, P., Ganschow, S., Wenner, S., Chiang, Y.-M., Keckes, J., Fleig, J., Rettenwander, D.

“…Understanding the cause of lithium dendrites formation and propagation is essential for developing practical all-solid-state batteries. Li dendrites are…”
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Comparison, Selection, and Parameterization of Electrical Battery Models for Automotive Applications by Einhorn, M., Conte, F. V., Kral, C., Fleig, J.

“…This paper describes the comparison and parameterization process of dynamic battery models for cell and system simulation. Three commonly used equivalent…”
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Hydrogen oxidation mechanisms on Ni/yttria stabilized zirconia anodes: Separation of reaction pathways by geometry variation of pattern electrodes by Doppler, M.C., Fleig, J., Bram, M., Opitz, A.K.

“…Nickel/yttria stabilized zirconia (YSZ) electrodes are affecting the overall performance of solid oxide fuel cells (SOFCs) in general and strongly contribute…”
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Quantitative imaging of structured complex metal oxide thin films using online-LASIL-ICP-MS by Herzig, C., Frank, J., Opitz, A.K., Fleig, J., Limbeck, A.

“…Online-laser ablation of solids in liquid (online-LASIL) coupled with ICP-MS detection was used as a new sampling strategy for the analysis of complex metal…”
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Microelectrodes in solid state ionics by Fleig, J.

“…The great potential of microelectrode measurements in several fields of solid state ionics is discussed and exemplified: (i) Microelectrodes are perfectly…”
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The separation of grain and grain boundary impedance in thin yttria stabilized zirconia (YSZ) layers by Gerstl, M., Navickas, E., Friedbacher, G., Kubel, F., Ahrens, M., Fleig, J.

“…An improved electrode geometry is proposed to study thin ion conducting films by impedance spectroscopy. It is shown that long, thin, and closely spaced…”
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The polarization resistance of mixed conducting SOFC cathodes: A comparative study using thin film model electrodes by Baumann, F.S., Maier, J., Fleig, J.

“…The oxygen reduction reaction on YSZ solid electrolytes is investigated by means of thin film microelectrodes employing perovskite-type mixed conductors such…”
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The origin of conductivity variations in Al-stabilized Li7La3Zr2O12 ceramics by Wachter-Welzl, A., Kirowitz, J., Wagner, R., Smetaczek, S., Brunauer, G.C., Bonta, M., Rettenwander, D., Taibl, S., Limbeck, A., Amthauer, G., Fleig, J.

“…All-solid state batteries have the ability to bring us closer to a zero-emission society. Such battery systems, however, require a powerful solid Li-ion…”
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The polarization of mixed conducting SOFC cathodes: Effects of surface reaction coefficient, ionic conductivity and geometry by Fleig, J., Maier, J.

“…Multi-dimensional finite element simulations of current distributions in mixed ionic and electronic conducting cathodes (MIEC) are presented for the case that…”
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The p(O2) dependence of oxygen surface coverage and exchange current density of mixed conducting oxide electrodes: model considerations by Fleig, J, Merkle, Rotraut, Maier, Joachim

“…The charge of adsorbed oxygen species such as O, O or O electrostatically affects the kinetics of the oxygen exchange reaction (1/2O2+2e-<-->O2-) taking place…”
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The influence of non-ideal microstructures on the analysis of grain boundary impedances by Fleig, J

“…The so-called brick layer model is frequently used to analyze impedance spectra of polycrystalline samples with highly resistive grain boundaries. However, the…”
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Resistive states in strontium titanate thin films: Bias effects and mechanisms at high and low temperature by Kubicek, M., Taibl, S., Navickas, E., Hutter, H., Fafilek, G., Fleig, J.

“…A study on charge transport properties of thin film Fe-doped SrTiO 3 epitaxially grown on Nb-doped SrTiO 3 is reported. Electric measurements between 350 °C…”
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Nano-scale oxide formation inside electrochemically-formed Pt blisters at a solid electrolyte interface by Keller, T.F., Volkov, S., Navickas, E., Kulkarni, S., Vonk, V., Fleig, J., Stierle, A.

“…We report on platinum oxide formation during electrochemical anodic polarization of a platinum film on yttria-stabilized zirconia (YSZ) under electrochemical…”
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Temperature gradients in microelectrode measurements: Relevance and solutions for studies of SOFC electrode materials by Huber, T M, Opitz, A K, Kubicek, M, Hutter, H, Fleig, J

“…Microelectrodes on solid electrolytes, contacted by current-collecting tips, have become increasingly important for analyzing electrochemical properties of…”
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Ba0.5Sr0.5Co0.8Fe0.2O3−δ thin film microelectrodes investigated by impedance spectroscopy by BAUMANN, F, FLEIG, J, HABERMEIER, H, MAIER, J

“…The electrochemical properties of geometrically well-defined Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) microelectrodes have been investigated by impedance…”
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Oxygen vacancy redistribution in PbZrxTi1−xO3 (PZT) under the influence of an electric field by Holzlechner, G., Kastner, D., Slouka, C., Hutter, H., Fleig, J.

“…Oxygen isotope exchange experiments are performed in donor doped PbZrxTi1−xO3 (PZT) under field load. A detailed mapping of the oxygen tracer ions and thus…”
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Microelectrodes for local conductivity and degradation measurements on Al stabilized Li7La3Zr2O12 garnets by Wachter-Welzl, Andreas, Wagner, R., Rettenwander, D., Taibl, S., Amthauer, G., Fleig, J.

“…The attractiveness of Li 7 La 3 Zr 2 O 12 (LLZO) cubic based garnets lies in their high ionic conductivity and the combination of thermal and electrochemical…”
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