Measurements of the electronic conductivities of In-doped CaZrO3 by a DC polarization technique

Noriaki Kurita; Yue Ping Xiong; Yuusuke Imai; Norihiko Fukatsu

doi:10.1007/s11581-010-0466-6

Measurements of the electronic conductivities of In-doped CaZrO₃ by a DC polarization technique

Noriaki Kurita^*
, Yue Ping Xiong
, Yuusuke Imai
, Norihiko Fukatsu

^*Corresponding author for this work

Nagoya Institute of Technology

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The following hydrogen and oxygen concentration cells using the oxide protonic conductors, Cazr_0.98In_0.02O_3-δ, as the solid electrolyte were constructed, and their polarization behavior was studied, (reversible: -)Pt,H₂+H₂O/Cazr_1-yIn_yO_3-δ(y = 0.02or0.1)/Ar(+H₂ + O₂), Pt(+: irreversible) The characteristics between applied voltages and external currents (V-I characteristics) in a DC polarization state were studied at 1,173 to 1,273 K in various atmospheres at the side of the reversible electrode. From the obtained atmosphere dependence of the steady-state current, the solubilities of protons in In-doped CaZrO₃ were evaluated based on the appropriate defect model. The solubility of protons was found to decrease with increasing indium concentration in the matrix. The standard free energy of proton dissolution into In-doped CaZrO₃ of the composition CaZr_0.98In_0.02O_3-δ was estimated to be as follows:, and that of the composition CaZr_0.98In_0.02O_3-δ could not be determined accurately.

Original language	English
Pages (from-to)	787-795
Number of pages	9
Journal	Ionics
Volume	16
Issue number	9
DOIs	https://doi.org/10.1007/s11581-010-0466-6
State	Published - Dec 2010
Externally published	Yes

Keywords

Calcium zirconate
DC polarization
In-doped
Proton conductivity
Proton solubility

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10.1007/s11581-010-0466-6

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title = "Measurements of the electronic conductivities of In-doped CaZrO3 by a DC polarization technique",

abstract = "The following hydrogen and oxygen concentration cells using the oxide protonic conductors, Cazr0.98In0.02O3-δ, as the solid electrolyte were constructed, and their polarization behavior was studied, (reversible: -)Pt,H2+H2O/Cazr1-yInyO3-δ(y = 0.02or0.1)/Ar(+H2 + O2), Pt(+: irreversible) The characteristics between applied voltages and external currents (V-I characteristics) in a DC polarization state were studied at 1,173 to 1,273 K in various atmospheres at the side of the reversible electrode. From the obtained atmosphere dependence of the steady-state current, the solubilities of protons in In-doped CaZrO3 were evaluated based on the appropriate defect model. The solubility of protons was found to decrease with increasing indium concentration in the matrix. The standard free energy of proton dissolution into In-doped CaZrO3 of the composition CaZr0.98In0.02O3-δ was estimated to be as follows:, and that of the composition CaZr0.98In0.02O3-δ could not be determined accurately.",

keywords = "Calcium zirconate, DC polarization, In-doped, Proton conductivity, Proton solubility",

author = "Noriaki Kurita and Xiong, \{Yue Ping\} and Yuusuke Imai and Norihiko Fukatsu",

year = "2010",

month = dec,

doi = "10.1007/s11581-010-0466-6",

language = "英语",

volume = "16",

pages = "787--795",

journal = "Ionics",

issn = "0947-7047",

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number = "9",

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TY - JOUR

T1 - Measurements of the electronic conductivities of In-doped CaZrO3 by a DC polarization technique

AU - Kurita, Noriaki

AU - Xiong, Yue Ping

AU - Imai, Yuusuke

AU - Fukatsu, Norihiko

PY - 2010/12

Y1 - 2010/12

N2 - The following hydrogen and oxygen concentration cells using the oxide protonic conductors, Cazr0.98In0.02O3-δ, as the solid electrolyte were constructed, and their polarization behavior was studied, (reversible: -)Pt,H2+H2O/Cazr1-yInyO3-δ(y = 0.02or0.1)/Ar(+H2 + O2), Pt(+: irreversible) The characteristics between applied voltages and external currents (V-I characteristics) in a DC polarization state were studied at 1,173 to 1,273 K in various atmospheres at the side of the reversible electrode. From the obtained atmosphere dependence of the steady-state current, the solubilities of protons in In-doped CaZrO3 were evaluated based on the appropriate defect model. The solubility of protons was found to decrease with increasing indium concentration in the matrix. The standard free energy of proton dissolution into In-doped CaZrO3 of the composition CaZr0.98In0.02O3-δ was estimated to be as follows:, and that of the composition CaZr0.98In0.02O3-δ could not be determined accurately.

AB - The following hydrogen and oxygen concentration cells using the oxide protonic conductors, Cazr0.98In0.02O3-δ, as the solid electrolyte were constructed, and their polarization behavior was studied, (reversible: -)Pt,H2+H2O/Cazr1-yInyO3-δ(y = 0.02or0.1)/Ar(+H2 + O2), Pt(+: irreversible) The characteristics between applied voltages and external currents (V-I characteristics) in a DC polarization state were studied at 1,173 to 1,273 K in various atmospheres at the side of the reversible electrode. From the obtained atmosphere dependence of the steady-state current, the solubilities of protons in In-doped CaZrO3 were evaluated based on the appropriate defect model. The solubility of protons was found to decrease with increasing indium concentration in the matrix. The standard free energy of proton dissolution into In-doped CaZrO3 of the composition CaZr0.98In0.02O3-δ was estimated to be as follows:, and that of the composition CaZr0.98In0.02O3-δ could not be determined accurately.

KW - Calcium zirconate

KW - DC polarization

KW - In-doped

KW - Proton conductivity

KW - Proton solubility

UR - https://www.scopus.com/pages/publications/78649649949

U2 - 10.1007/s11581-010-0466-6

DO - 10.1007/s11581-010-0466-6

M3 - 文章

AN - SCOPUS:78649649949

SN - 0947-7047

VL - 16

SP - 787

EP - 795

JO - Ionics

JF - Ionics

IS - 9

ER -

Measurements of the electronic conductivities of In-doped CaZrO₃ by a DC polarization technique

Abstract

Keywords

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