Electrical conduction of partially stabilized zirconia Zr0.94Ca0.06O1.94 as a function of temperature and oxygen partial pressure

1982 ◽  
Vol 17 (9) ◽  
pp. 2577-2584 ◽  
Author(s):  
Su-Il Pyun ◽  
Yeong-Eon Ihm
Keyword(s):  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Electrical Conduction ◽  
Stabilized Zirconia ◽  
Partially Stabilized Zirconia

Mixed Conducting and Cathodic Properties of Zirconia-Nio Mixture

1998 ◽  
Vol 548 ◽  
Author(s):  
Y. M. Park ◽  
G. M. Choi
Keyword(s):  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Pressure Dependence ◽  
Composition Range ◽  
Porous Electrode ◽  
Electronic Conductivity ◽  
Electronic Contribution ◽  
Stabilized Zirconia ◽  
Wide Composition Range ◽  
Ysz Electrolyte

AbsractStabilized zirconia-NiO mixture was chosen as a representative of ionic-electronic composite and the effect of mixture composition on the mixed conducting properties were studied. The measurements of oxygen partial-pressure dependence of conductivity and Hebb-Wagner polarization enabled to determine the electronic contribution to the total conduction in a wide composition range. In ion conduction region, electronic conductivity increased continuously with NiO content. The overpotentials of screen-printed YSZ-NiO electrode on YSZ electrolyte were measured and found to decrease with increasing NiO content and thus with the estimated electronic conductivity of porous electrode.

High temperature electrical conduction in nanoscale hafnia films under varying oxygen partial pressure

2010 ◽  
Vol 97 (8) ◽  
pp. 082102 ◽  
Author(s):  
Changhyun Ko ◽  
Michael Shandalov ◽  
Paul C. McIntyre ◽  
Shriram Ramanathan
Keyword(s):  
High Temperature ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Electrical Conduction

Bulk and Grain Boundary Conductivities as Function of Temperature and Oxygen Partial Pressure of Scandia-Stabilized Zirconia Co-Doped with Yttria and Ceria

2019 ◽  
Vol 25 (2) ◽  
pp. 1635-1642 ◽  
Author(s):  
Wolfgang Preis ◽  
Andreas Egger ◽  
Jörg Waldhäusl ◽  
Werner Sitte ◽  
Eduarda De Carvalho ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Stabilized Zirconia ◽  
Co Doped

Die Thermokraft von kubisch stabilisiertem Zirkonoxid zwischen Sauerstoffelektroden

1967 ◽  
Vol 22 (10) ◽  
pp. 1575-1581 ◽  
Author(s):  
W. Fischer
Keyword(s):  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Thermoelectric Power ◽  
Thermodynamic Data ◽  
Experimental Results ◽  
Vacancy Mechanism ◽  
Stabilized Zirconia ◽  
Oxygen Ions ◽  
Partial Molar Entropy ◽  
Heats Of Transfer

The thermoelectric power Δφ/ΔT [mV/grad] of cells of the type O2 | T stabilized zirconia | T + ΔT O2 has been determined as a function of oxygen partial pressure p [Torr] in the temperature range 960°K ≦ T ≦ 1310°K. The experimental results can be described by the equations-Δφ/ΔT=0,492+0,0220 ln(159/p) for (ZrO2)0,88(CaO)0,12 and-Δφ/ΔT=0,460+0,0219 ln (159/p) for (ZrO2)0,91(Y2O3)0,09.The change of Δφ/ΔT with oxygen partial pressure corresponds to the change of partial molar entropy of O2.The heats of transfer of oxygen ions are estimated from experimental results and thermodynamic data. From the negative sign of the heat of transfer it is concluded, that oxygen ions migrate by a vacancy mechanism, which has been established also by experiments of other authors.

Electrical conductivity of p-type BiOCl nanosheets

2015 ◽  
Vol 51 (13) ◽  
pp. 2629-2632 ◽  
Author(s):  
Yoon Myung ◽  
Fei Wu ◽  
Sriya Banerjee ◽  
Jeunghee Park ◽  
Parag Banerjee
Keyword(s):  
Electrical Conductivity ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Electrical Conduction ◽  
Hydrolysis Method ◽  
P Type

BiOCl nanosheets were synthesized using a facile hydrolysis method and their p-type electrical conduction as a function of oxygen partial pressure was measured.

Electrical Conduction Properties of Liquid Vanadates. I. Vanadium Pentoxide

1972 ◽  
Vol 50 (17) ◽  
pp. 2865-2870 ◽  
Author(s):  
R. C. Kerby ◽  
J. R. Wilson
Keyword(s):  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Temperature Coefficient ◽  
Vanadium Pentoxide ◽  
Electrical Conduction ◽  
Pressure Coefficient ◽  
Positive Temperature ◽  
Temperature Range ◽  
Partial Pressures ◽  
Conduction Properties

The electrical conductivity of liquid vanadium pentoxide was measured as a function of temperature and oxygen partial pressure. A positive temperature coefficient and a negative oxygen partial pressure coefficient of conduction were found for the temperature range 670 to 1000 °C and oxygen partial pressures from 0.1 to 1.0 atm. The activation energy of conduction was 0.77 eV and the oxygen partial pressure coefficient was −0.16. At oxygen partial pressures less than 0.1 atm, for the same temperature range, a negative temperature coefficient and a negative oxygen partial pressure coefficient of conduction were found.An n-type semiconduction model was used to explain the electrical conduction properties of liquid vanadium pentoxide at oxygen partial pressures greater than 0.1 atm. At lower oxygen partial pressures, electrical conduction was considered to occur by collective-electron conduction in partially filled 3d bands, due to an overlapping of the diffuse valence and conduction bands. The overlapping could result from a decrease in the cation separation distance in the melt due to the removal of oxygen ions from the melt.

Control of Oxygen Partial Pressure with Stabilized Zirconia Cell

1975 ◽  
Vol 12 (5) ◽  
pp. 314-319 ◽  
Author(s):  
Keiji NAITO ◽  
Toshihide TSUJI ◽  
Yamato ASAKURA
Keyword(s):  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Stabilized Zirconia
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