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The influence of fluorine doping on transport properties in the novel proton conductors Ba4In2Zr2O11-0.5xFx with perovskite structure |
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| Institution: | 1. School of Chemistry & Chemical Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou 510640, China;2. Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstrasse 3A, D-30167 Hannover, Germany;1. Department of Chemistry, University of Oslo, SMN, FERMiO, Gaustadalléen 21, NO-0349 Oslo, Norway;2. Catalan Institute of Nanoscience and Nanotechnology, ICN2 (CSIC/ICN), Campus UAB, 08193 Bellaterra, Barcelona, Spain;1. School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China;2. Department of Physics and Astronomy, Curtin University, Perth, 6102, Western Australia, Australia;3. Department of Chemical Engineering, Curtin University, Perth, 6102, Western Australia, Australia |
| Abstract: | The effect of fluorine doping on the transport properties of perovskite-related complex oxides based on oxygen-ion conductor Ba4In2Zr2O11 is analyzed. The effect of fluorine doping and air humidity on the cell volume is established. The introduction of fluorine into the oxygen sublattice leads to the decreasing in the cell volume. The hydration of samples leads to the lattice expansion for both undoped and doped samples in comparison with unhydrated samples. The amount of water uptake decreases with the increase in the fluorine concentration. It was shown that fluorine doping allows to increase the proton conductivity in the region of low fluorine concentrations. The determining factor is not the change in the concentration of the current carrier, but the increase in its mobility. |
| Keywords: | Perovskite Anionic doping Fluorine doping Proton conductivity Mixed anionic effect |
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