Polarized‐Cell Measurements on Yttria‐Stabilized Zirconia Using an Anodically Blocked Electrode

Бронин, Д. И.; Kuzin, B. L.; Näfe, H.; Aldinger, Fritz

doi:10.1149/1.1391887

Cited by 7 publications

(8 citation statements)

References 7 publications

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“…The equilibrium oxygen partial pressure of Ni and NiO corresponds to 5 Â 10 À10 Pa at 1073 K, as calculated by using the standard Gibbs energy of formation of NiO. 15) PSZ matrix near the Ni particles should be in the region of electronic conduction. In this study, oxygen permeation through PSZ is assumed simply to be rate-controlled by only the hole conduction, as shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

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High Temperature Oxidation of Y2O3 Partially-Stabilized ZrO2 Composites Dispersed with Ni Particles

2003

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High temperature oxidation of Y 2 O 3 -partially stabilized ZrO 2 composites dispersed with Ni particles was investigated at temperatures ranging from 873 to 1073 K in air. Cracks between Ni particles forms parallel to the surface during high temperature oxidation. Thickness of the cracked zone increases proportionally with increasing oxidation time. A model for the growth of the cracked zone was established as a basis of the oxidation of Ni particles by permeation of oxide ions through the Y 2 O 3 -partially stabilized ZrO 2 matrix, which is rate-controlled by hole conduction. Growth behavior calculated by the model is in good agreement with the experimental results.

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Section: Discussionmentioning

confidence: 99%

“…17) and disperse with the one order of magnetude. 15) The reported values of the mechanical properties of PSZ at high temperatures also have wide variations. The order of magnitude of k l obtained by the model calculation is in agreement with the experimental results.…”

Section: =3mentioning

confidence: 99%

High Temperature Oxidation of Y2O3 Partially-Stabilized ZrO2 Composites Dispersed with Ni Particles

2003

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“…Over the past four decades, electronic conductivity 4 of many oxygen ion conductors such as YSZ, rare earth oxide doped ceria, pyrochlores, etc. has been measured using Hebb-Wagner and permeation methods [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Electronic conductivity measurement of yttria-stabilized zirconia solid electrolytes by a transient technique

Zhang

Zhu

Virkar

2016

Journal of Power Sources

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A new oxygen permeation technique is developed to measure the electronic conductivity of yttria-stabilized zirconia (YSZ). The permeation cell is a YSZ disc with an embedded Pt probe and a cavity at the center. Two porous platinum electrodes are applied on the disc surfaces. By applying a small DC bias (0.03V) across one surface electrode and the embedded probe, oxygen is pumped into the YSZ disc and stored in the cavity. In steady state, a stable Nernst potential is developed between the cavity and the outer surfaces. The Nernst voltage is very close to the applied voltage since YSZ is essentially an ionic conductor. When the DC bias is removed, oxygen permeates out of the cavity leading to a decay of the Nernst potential. Electronic conductivity of YSZ corresponding to the ambient oxygen pressure (~0.21 atm) is determined by analyzing the time dependence of © 2015. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/ 2 the decay of Nernst potential. The measured electronic conductivity is in good agreement with values reported in the literature.

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“…103 S.cm ]. The electrochemical activity of the In203-electrode is low to an extent that, as was shown in [28], it fully inhibits ionic transport in the ZrO2-based solid electrolyte. A small electric current, which flows in the cell upon application of a voltage lower than the electrolyte decomposition voltage, is not of the Faraday origin, but is due to minor electron carriers (holes) in the electrolyte.…”

Section: Dense Indium-oxide Electrodementioning

confidence: 77%

Evaluation of the electrical capacitance of M,O2/O2− interfaces (M=Pt, Au, Pd, In2O3; O2− = zirconia based electrolyte) exhibiting constant phase element behavior

Kuzin

Бронин

2001

Ionics

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Abstract. The behavior of the electrode systems M,O2/O 2 (M = porous Pd, Pt, A and den~ ln20~ ; 0 2. = ZrO2-based single-crystal solid electrolyte) was studied by means of impedance measurements. The examination of the Pt,O2/O 2 electrode system showed that the constant phase element (CPE) can be attributed to a nonuniform distribution of current at the electrode surface. It was observed that the CPE parameters n and B in the expression YCPE = B ( j03 )" may be related by B = (Cd0" (R~2) "~ ,where Cd~ is the double layer capacitance and Rn the resistance of the electrolyte in the cell. Then, Cj~ of the electrode -electrolyte interface could be determined. The specific Cd~ of the oxidized noble metals and india electrodes is nearly one order of magnitude lower than Ca~ of the electrodes in the metallic state. The Cd~ value of all the electrodes studied depends little or is independent of temperature and oxygen pressure. It is concluded that the Helmholtz model of double layer structure does not contradict the Cjj behavior.

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Polarized‐Cell Measurements on Yttria‐Stabilized Zirconia Using an Anodically Blocked Electrode

Cited by 7 publications

References 7 publications

High Temperature Oxidation of Y<SUB>2</SUB>O<SUB>3</SUB> Partially-Stabilized ZrO<SUB>2</SUB> Composites Dispersed with Ni Particles

High Temperature Oxidation of Y<SUB>2</SUB>O<SUB>3</SUB> Partially-Stabilized ZrO<SUB>2</SUB> Composites Dispersed with Ni Particles

Electronic conductivity measurement of yttria-stabilized zirconia solid electrolytes by a transient technique

Evaluation of the electrical capacitance of M,O2/O2− interfaces (M=Pt, Au, Pd, In2O3; O2− = zirconia based electrolyte) exhibiting constant phase element behavior

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