Transport properties of ceria-zirconia-yttria solid solutions {(CeO 2)x(ZrO2)1-x}1-y(YO 1.5)y (x = 0-1, y = 0.2, 0.35)

N. Sakai; Y. P. Xiong; K. Yamaji; H. Kishimoto; T. Horita; M. E. Brito; H. Yokokawa

doi:10.1016/j.jallcom.2004.12.088

Transport properties of ceria-zirconia-yttria solid solutions {(CeO ₂)_x(ZrO₂)_1-x}_1-y(YO _1.5)_y (x = 0-1, y = 0.2, 0.35)

N. Sakai^*
, Y. P. Xiong
, K. Yamaji
, H. Kishimoto
, T. Horita
, M. E. Brito
, H. Yokokawa

^*Corresponding author for this work

National Institute of Advanced Industrial Science and Technology

Research output: Contribution to journal › Conference article › peer-review

14 Scopus citations

Abstract

The electron and hole conductivity, oxygen transport property and thermal expansion behavior of {(CeO₂)_0.5(ZrO₂) _0.5}_0.65(YO_1.5)_0.35 solid solution were investigated and the effect of yttrium content was examined by comparing the data with those of {(CeO₂)_1-x(ZrO₂) _x}_0.8(YO_1.5)_0.2. The electron conductivity of {(CeO₂)_0.5(ZrO₂) _0.5}_0.65(YO_1.5)_0.35 measured by ion blocking method was one order lower than that of {(CeO₂) _0.5(ZrO₂)_0.5}_0.8(YO _1.5)_0.2. The increase of yttrium content suppressed the phase transition from cubic to pyrochlore structure in reducing atmosphere. The oxygen isotope diffusivity and surface exchange rate constant of {(CeO ₂)_0.5(ZrO₂)_0.5} _0.65(YO_1.5)_0.35 are considered to be comparable to those of {(CeO₂)_0.5(ZrO₂) _0.5}_0.8(YO_1.5)_0.2. The chemical expansion due to the reduction of cerium ion was observed as well as for rare earth doped ceria. The compatibility of the material as an anode substrate in solid oxide fuel cells is discussed.

Original language	English
Pages (from-to)	503-506
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	408-412
DOIs	https://doi.org/10.1016/j.jallcom.2004.12.088
State	Published - 9 Feb 2006
Externally published	Yes
Event	Proceedings of the Rare Earths'04 in Nara, Japan - Duration: 7 Nov 2004 → 12 Nov 2004

Keywords

Diffusion
Hole conductivity
Ion-blocking
SOFC
Thermal expansion

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10.1016/j.jallcom.2004.12.088

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@article{e6702372e31c494a94cce1329e85b8a5,

title = "Transport properties of ceria-zirconia-yttria solid solutions \{(CeO 2)x(ZrO2)1-x\}1-y(YO 1.5)y (x = 0-1, y = 0.2, 0.35)",

abstract = "The electron and hole conductivity, oxygen transport property and thermal expansion behavior of \{(CeO2)0.5(ZrO2) 0.5\}0.65(YO1.5)0.35 solid solution were investigated and the effect of yttrium content was examined by comparing the data with those of \{(CeO2)1-x(ZrO2) x\}0.8(YO1.5)0.2. The electron conductivity of \{(CeO2)0.5(ZrO2) 0.5\}0.65(YO1.5)0.35 measured by ion blocking method was one order lower than that of \{(CeO2) 0.5(ZrO2)0.5\}0.8(YO 1.5)0.2. The increase of yttrium content suppressed the phase transition from cubic to pyrochlore structure in reducing atmosphere. The oxygen isotope diffusivity and surface exchange rate constant of \{(CeO 2)0.5(ZrO2)0.5\} 0.65(YO1.5)0.35 are considered to be comparable to those of \{(CeO2)0.5(ZrO2) 0.5\}0.8(YO1.5)0.2. The chemical expansion due to the reduction of cerium ion was observed as well as for rare earth doped ceria. The compatibility of the material as an anode substrate in solid oxide fuel cells is discussed.",

keywords = "Diffusion, Hole conductivity, Ion-blocking, SOFC, Thermal expansion",

author = "N. Sakai and Xiong, \{Y. P.\} and K. Yamaji and H. Kishimoto and T. Horita and Brito, \{M. E.\} and H. Yokokawa",

year = "2006",

month = feb,

day = "9",

doi = "10.1016/j.jallcom.2004.12.088",

language = "英语",

volume = "408-412",

pages = "503--506",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

note = "Proceedings of the Rare Earths'04 in Nara, Japan ; Conference date: 07-11-2004 Through 12-11-2004",

}

TY - JOUR

T1 - Transport properties of ceria-zirconia-yttria solid solutions {(CeO 2)x(ZrO2)1-x}1-y(YO 1.5)y (x = 0-1, y = 0.2, 0.35)

AU - Sakai, N.

AU - Xiong, Y. P.

AU - Yamaji, K.

AU - Kishimoto, H.

AU - Horita, T.

AU - Brito, M. E.

AU - Yokokawa, H.

PY - 2006/2/9

Y1 - 2006/2/9

N2 - The electron and hole conductivity, oxygen transport property and thermal expansion behavior of {(CeO2)0.5(ZrO2) 0.5}0.65(YO1.5)0.35 solid solution were investigated and the effect of yttrium content was examined by comparing the data with those of {(CeO2)1-x(ZrO2) x}0.8(YO1.5)0.2. The electron conductivity of {(CeO2)0.5(ZrO2) 0.5}0.65(YO1.5)0.35 measured by ion blocking method was one order lower than that of {(CeO2) 0.5(ZrO2)0.5}0.8(YO 1.5)0.2. The increase of yttrium content suppressed the phase transition from cubic to pyrochlore structure in reducing atmosphere. The oxygen isotope diffusivity and surface exchange rate constant of {(CeO 2)0.5(ZrO2)0.5} 0.65(YO1.5)0.35 are considered to be comparable to those of {(CeO2)0.5(ZrO2) 0.5}0.8(YO1.5)0.2. The chemical expansion due to the reduction of cerium ion was observed as well as for rare earth doped ceria. The compatibility of the material as an anode substrate in solid oxide fuel cells is discussed.

AB - The electron and hole conductivity, oxygen transport property and thermal expansion behavior of {(CeO2)0.5(ZrO2) 0.5}0.65(YO1.5)0.35 solid solution were investigated and the effect of yttrium content was examined by comparing the data with those of {(CeO2)1-x(ZrO2) x}0.8(YO1.5)0.2. The electron conductivity of {(CeO2)0.5(ZrO2) 0.5}0.65(YO1.5)0.35 measured by ion blocking method was one order lower than that of {(CeO2) 0.5(ZrO2)0.5}0.8(YO 1.5)0.2. The increase of yttrium content suppressed the phase transition from cubic to pyrochlore structure in reducing atmosphere. The oxygen isotope diffusivity and surface exchange rate constant of {(CeO 2)0.5(ZrO2)0.5} 0.65(YO1.5)0.35 are considered to be comparable to those of {(CeO2)0.5(ZrO2) 0.5}0.8(YO1.5)0.2. The chemical expansion due to the reduction of cerium ion was observed as well as for rare earth doped ceria. The compatibility of the material as an anode substrate in solid oxide fuel cells is discussed.

KW - Diffusion

KW - Hole conductivity

KW - Ion-blocking

KW - SOFC

KW - Thermal expansion

UR - https://www.scopus.com/pages/publications/31144470538

U2 - 10.1016/j.jallcom.2004.12.088

DO - 10.1016/j.jallcom.2004.12.088

M3 - 会议文章

AN - SCOPUS:31144470538

SN - 0925-8388

VL - 408-412

SP - 503

EP - 506

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

T2 - Proceedings of the Rare Earths'04 in Nara, Japan

Y2 - 7 November 2004 through 12 November 2004

ER -

Transport properties of ceria-zirconia-yttria solid solutions {(CeO ₂)_x(ZrO₂)_1-x}_1-y(YO _1.5)_y (x = 0-1, y = 0.2, 0.35)

Abstract

Keywords

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