Electrical conductivity of bismuth doped dysprosia stabilized zirconia as an electrolyte material for SOFC
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Prabhakar Singh Raghvendra
Abstract
We report our investigations on structural, thermal and electrical behavior of 10 mol.% dysprosia stabilized zirconia (DySZr) and 2 mol.% Bi2O3-doped dysprosia stabilized zirconia (2BiDySZr) prepared via a solid state ceramic route. Addition of 2 mol.% of Bi2O3 decreased the sintering temperature of DySZr, promoted the growth of zirconia grains and also improved the density. This also supports stabilizing the cubic phase at room temperature. The electrical conductivity was found to increase on account of bismuth doping in DySZr. The activation energies for conduction in DySZr and 2BiDySZr systems were found to be 1.11 and 1.15 eV, respectively in the measured temperature range, indicating the oxygen ion conductivity in the system. The thermal expansion coefficient of the Bi2O3-doped DySZr system was found to match with the other component materials for solid oxide fuel cells.
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© 2015, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Thermodynamic description of the Ti–O system
- Influence of MgO on the phase equilibria in the CuOx–FeOy–MgO–SiO2 system in equilibrium with copper alloy – Part I: methodology and liquidus in the tridymite primary phase field
- Experimental phase diagram of the V–Si–Ho ternary system
- Experimental study of the phase relationships in the Al-rich corner of the Al–Si–Fe–Cr quaternary system at 700 °C
- Effect of quench–ageing treatment on the microstructure and properties of Zn-15Al-3Cu alloy
- Grain growth and thermal stability in nanocrystalline Fe–B alloys prepared by melt spinning
- Microatmosphere sintering of Fe-3.2Mn-1.5Si-0.5C steel in flowing technical nitrogen
- Structural, thermal and optical studies of nanocomposite powder NiSb + Sb produced by mechanical alloying
- Effect of Mo/B atomic ratio on the properties of Mo2NiB2-based cermets
- Improving the stoichiometry of RF-sputtered amorphous alumina thin films by thermal annealing
- Assessment on the contact factors of a sandwich soft finger model – An experimental investigation
- Reducing debinding time in thick components fabricated by powder injection molding
- Short Communications
- Rapid synthesis of Ag nanoparticles and Ag@SiO2 core–shells
- Electrical conductivity of bismuth doped dysprosia stabilized zirconia as an electrolyte material for SOFC
- People
- Prof. Dr.-Ing. Lorenz Singheiser on the occasion of his 65th birthday
- DGM News
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Thermodynamic description of the Ti–O system
- Influence of MgO on the phase equilibria in the CuOx–FeOy–MgO–SiO2 system in equilibrium with copper alloy – Part I: methodology and liquidus in the tridymite primary phase field
- Experimental phase diagram of the V–Si–Ho ternary system
- Experimental study of the phase relationships in the Al-rich corner of the Al–Si–Fe–Cr quaternary system at 700 °C
- Effect of quench–ageing treatment on the microstructure and properties of Zn-15Al-3Cu alloy
- Grain growth and thermal stability in nanocrystalline Fe–B alloys prepared by melt spinning
- Microatmosphere sintering of Fe-3.2Mn-1.5Si-0.5C steel in flowing technical nitrogen
- Structural, thermal and optical studies of nanocomposite powder NiSb + Sb produced by mechanical alloying
- Effect of Mo/B atomic ratio on the properties of Mo2NiB2-based cermets
- Improving the stoichiometry of RF-sputtered amorphous alumina thin films by thermal annealing
- Assessment on the contact factors of a sandwich soft finger model – An experimental investigation
- Reducing debinding time in thick components fabricated by powder injection molding
- Short Communications
- Rapid synthesis of Ag nanoparticles and Ag@SiO2 core–shells
- Electrical conductivity of bismuth doped dysprosia stabilized zirconia as an electrolyte material for SOFC
- People
- Prof. Dr.-Ing. Lorenz Singheiser on the occasion of his 65th birthday
- DGM News
- DGM News