Ionic conductivity of Gd- and Y-doped ceria-zirconia solid solutions

被引：0

作者：

Ruehrup, Vera ^{[1
]}

Wiemhoefer, Hans-Dieter ^{[1
]}

机构：

[1] Univ Munster, Inst Inorgan & Analyt Chem, D-48149 Munster, Germany

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2006年 / 61卷 / 07期

关键词：

ceria; zirconia; lattice parameter; ionic conductivity; impedance;

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The total conductivity of the solid solutions (Ce1-xZrx)(0.8)Gd0.2O1.9 and (Ce1-xZrx)(0.8)Y0.2O1.9 was measured in air as a function of temperature (T = 300 degrees C - 600 degrees C) and composition (x = 0.0-0.9). A deep minimum of the bulk ionic conductivity was found for equal fractions of ceria and zirconia. It indicates enhanced defect association and ordering of the oxygen vacancies around x = 0.5. X-ray analysis (Guinier technique) showed the diffraction pattern of the cubic fluorite structure for all investigated compositions 0 < x < 1. The lattice parameter decreased linearly with increasing zirconia content x.

引用

页码：916 / 922

页数：7

共 50 条

[21] Thermodynamic investigation of the redox properties of ceria-zirconia solid solutions
Gorte, Raymond J.
Kim, Taeyoon
Zhou, Gong
Shah, Parag
Vohs, John M.
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2006, 231
[22] Nanocrystalline ceria-praseodymia and ceria-zirconia solid solutions for soot oxidation
Thrimurthulu, Gode
Rao, Komateedi N.
Devaiah, Damma
Reddy, Benjaram M.
RESEARCH ON CHEMICAL INTERMEDIATES, 2012, 38 (08) : 1847 - 1855
[23] Combustion synthesis and properties of nanostructured ceria-zirconia solid solutions
Aruna, ST
Patil, KC
NANOSTRUCTURED MATERIALS, 1998, 10 (06): : 955 - 964
[24] Tetragonal Y-doped zirconia: Structure and ion conductivity
Eichler, A
PHYSICAL REVIEW B, 2001, 64 (17)
[25] Thermodynamic investigation of the redox properties of ceria-zirconia solid solutions
Kim, Taeyoon
Vohs, John M.
Gorte, Raymond J.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2006, 45 (16) : 5561 - 5565
[26] Phase separation and surface segregation in ceria-zirconia solid solutions
Grau-Crespo, Ricardo
de Leeuw, Nora H.
Hamad, Said
Waghmare, Umesh V.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2011, 467 (2131): : 1925 - 1938
[27] Thermodynamic correlation among defects in ceria-zirconia solid solutions
Yokokawa, H
Sakai, N
Horita, T
Yamaji, K
Xiong, YP
HIGH TEMPERATURE MATERIALS, PROCEEDINGS, 2002, 2002 (05): : 26 - 37
[28] Electrical and ionic conductivity of Gd-doped ceria
Wang, SR
Kobayashi, T
Dokiya, M
Hashimoto, T
SOLID OXIDE FUEL CELLS (SOFC VI), 1999, 99 (19): : 193 - 200
[29] Electrical and ionic conductivity of Gd-doped ceria
Wang, SR
Kobayashi, T
Dokiya, M
Hashimoto, T
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2000, 147 (10) : 3606 - 3609
[30] PAC characterization of Gd and Y doped nanostructured zirconia solid solutions
Caracoche, Maria C.
Martinez, Jorge A.
Pasquevich, Alberto F.
Rivas, Patricia C.
Djurado, Elizabeth
Boulc'h, Florence
PHYSICA B-CONDENSED MATTER, 2007, 389 (01) : 98 - 102

← 1 2 3 4 5 →