Ceria (Sm3+, Nd3+)/carbonates composite electrolytes with high electrical conductivity at low temperature

被引：55

作者：

Liu, Wei ^{[1
]}

Liu, Yanyi ^{[2
]}

Li, Bin ^{[1
]}

Sparks, Taylor D. ^{[3
]}

Wei, Xi ^{[1
]}

Pan, Wei ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

[3] Univ Calif Santa Barbara, Coll Engn, Dept Mat, Santa Barbara, CA USA

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2010年 / 70卷 / 01期

关键词：

Ceramic-matrix composites (CMCs); Electrical properties; Sol-gel methods; FUEL-CELL; IONIC-CONDUCTIVITY; SM3+; PERFORMANCE;

D O I：

10.1016/j.compscitech.2009.10.006

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Composite electrolytes composed of Sm3+ and Nd3+ co-doped ceria (SNDC) and binary carbonates (Li2CO3-Na2CO3) were investigated with respect to their microstructure, morphology and electrical conductivity. As a function of temperature, the electrical conductivity of the composite electrolytes was measured in air. The addition of (Li/Na)(2)CO3 to SNDC enhanced the high temperature conductivity. The conductivity also rose sharply around the intenerating and melting point of carbonates. The best performance of 0.01 S/cm at 481 degrees C was achieved for the composite electrolyte containing 20 wt.% carbonates. It is also estimated that the reason for the conductivity enhancement of SNDC is that the number of oxygen transfer routes increases at the interface between SNDC and (Li/Na)(2)CO3. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：181 / 185

页数：5

共 33 条

[1] Optimization of ionic conductivity in doped ceria [J].

Andersson, DA ;

Simak, SI ;

Skorodumova, NV ;

Abrikosov, IA ;

Johansson, B .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2006, 103 (10) :3518-3521

[2] Conductivity of SDC and (Li/Na)2CO3 composite electrolytes in reducing and oxidising atmospheres [J].

Boden, Andreas ;

Di, Jing ;

Lagergren, Carina ;

Lindbergh, Gran ;

Wang, Cheng Yang .

JOURNAL OF POWER SOURCES, 2007, 172 (02) :520-529

[3] Studies on structural, morphological and electrical properties of Ce1-xGdxO2-(x/2) [J].

Chourashiya, M. G. ;

Patil, J. Y. ;

Pawar, S. H. ;

Jadhav, L. D. .

MATERIALS CHEMISTRY AND PHYSICS, 2008, 109 (01) :39-44

[4] Ceramic oxide electrolytes based on CeO2-Preparation, properties and possibility of application to electrochemical devices [J].

Dudek, Magdalena .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2008, 28 (05) :965-971

[5] Electrolytes for solid oxide fuel cells [J].

Fergus, Jeffrey W. .

JOURNAL OF POWER SOURCES, 2006, 162 (01) :30-40

[6]

Herle J.V., 1999, J EUR CERAM SOC, V19, P837

[7] Development of novel low-temperature SOFCs with co-ionic conducting SDC-carbonate composite electrolytes [J].

Huang, Hanbing ;

Mao, Zongqiang ;

Liu, Zhixiang ;

Wang, Cheng .

ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (10) :2601-2605

[8] A high-performance ceramic fuel cell with samarium doped ceria-carbonate composite electrolyte at low temperatures [J].

Huang, Hanbing ;

Yang, Lizhai ;

Gao, Ruifeng ;

Mao, Zongqiang ;

Wang, Cheng .

ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (05) :785-789

[9] A review of AC impedance modeling and validation in SOFC diagnosis [J].

Huang, Qiu-An ;

Hui, Rob ;

Wang, Bingwen ;

Zhang, Hujun .

ELECTROCHIMICA ACTA, 2007, 52 (28) :8144-8164

[10] LATTICE-PARAMETERS, IONIC CONDUCTIVITIES, AND SOLUBILITY LIMITS IN FLUORITE-STRUCTURE HF-4+O2, ZR-4+O2, CE-4+O2, TH-4+O2, V-4+O2 OXIDE SOLID-SOLUTIONS [J].

KIM, DJ .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1989, 72 (08) :1415-1421

← 1 2 3 4 →