Synthesis and electrical properties of scheelite Ca1-xSmxMoO4+δ solid electrolyte ceramics

被引：16

作者：

Cheng, Jihai ^{[1
,2
]}

Liu, Chenfei ^{[1
]}

Cao, Wenbing ^{[1
]}

Qi, Mingxing ^{[1
]}

Shao, Guoquan ^{[1
]}

机构：

[1] Hefei Univ, Dept Chem & Mat Engn, Hefei 230022, Peoples R China

[2] Hefei Univ, Key Lab Powder & Energy Sources Mat, Hefei 230022, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 02期

关键词：

Ceramics; Chemical synthesis; Impedance spectroscopy; Electrical properties; ROOM-TEMPERATURE PREPARATION; OXIDE FUEL-CELLS; CONDUCTIVITY; CAMOO4; SOFCS; SR; BA; CA;

D O I：

10.1016/j.materresbull.2010.11.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Scheelite-type Ca1-xSmxMoO4+delta electrolyte powders were prepared by the sol-gel auto-combustion process. The crystal structure of the samples was determined by employing the techniques of X-ray diffraction (XRD). According to the XRD analysis, the formed continuous series of Ca1-xSmxMoO4+delta (0 <= x <= 0.3) solid solutions had the structure of tetragonal scheelite, and the lattice parameters increased with increasing x in the Sm-substituted system. Results of sinterability and electrochemical testing revealed that the performances of Sm-doped calcium molybdate were superior to that of pure CaMoO4. Ca1-xSmxMoO4+delta ceramics show higher sinterability, and the Ca0.8Sm0.2MoO4+delta sample with 98.7% of the theoretical density were obtained after being sintered at 1250 degrees C for 4 h. The conductivity increased with increasing samarium content, and a total conductivity 9.54 x 10(-3) S cm(-1) at 800 degrees C could be obtained in Ca0.8Sm0.2MoO4+delta sintered at 1250 degrees C for 4 h. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：185 / 189

页数：5

共 25 条

[1] High-performance bilayered electrolyte intermediate temperature solid oxide fuel cells [J].

Ahn, Jin Soo ;

Pergolesi, Daniele ;

Camaratta, Matthew A. ;

Yoon, Heesung ;

Lee, Byung Wook ;

Lee, Kang Taek ;

Jung, Doh Won ;

Traversa, Enrico ;

Wachsman, Eric D. .

ELECTROCHEMISTRY COMMUNICATIONS, 2009, 11 (07) :1504-1507

[2] LATTICE DISORDER AND ELECTRICAL-CONDUCTIVITY OF FLUX GROWN CA(WO4)X(MOO4)1-X CRYSTALS [J].

ARORA, SK ;

GODBOLE, RS ;

LAKSHMINARAYANA, D .

JOURNAL OF MATERIALS SCIENCE, 1983, 18 (05) :1359-1364

[3] Life cycle assessment of fuel cell-based APUs [J].

Baratto, F ;

Diwekar, UM .

JOURNAL OF POWER SOURCES, 2005, 139 (1-2) :188-196

[4] Room-temperature preparation of highly crystallized CaWO4 film by a galvanic cell method [J].

Cui, Chunhua ;

Bi, Jian ;

Gao, Daojiang .

MATERIALS LETTERS, 2008, 62 (16) :2222-2224

[5] Oxide ion conduction in the Sm-substituted PbWO4 phases [J].

Esaka, T ;

Tachibana, R ;

Takai, S .

SOLID STATE IONICS, 1996, 92 (1-2) :129-133

[6] Ionic conduction in substituted scheelite-type oxides [J].

Esaka, T .

SOLID STATE IONICS, 2000, 136 :1-9

[7] Synthesis and modification of non-stoichiometric spinel (Li1.02Mn1.90Y0.02O4-yF0.08) for lithium-ion batteries [J].

Feng, Chuanqi ;

Li, Hua ;

Zhang, Peng ;

Guo, Zaiping ;

Liu, Huakun .

MATERIALS CHEMISTRY AND PHYSICS, 2010, 119 (1-2) :82-85

[8] Screen printing of sol-gel-derived electrolytes for solid oxide fuel cell (SOFC) application [J].

Hansch, Ralf ;

Chowdhury, Mohammad Rahul Reza ;

Menzler, Norbert H. .

CERAMICS INTERNATIONAL, 2009, 35 (02) :803-811

[9] Preparation and characterization of strontium and magnesium doped lanthanum gallates as the electrolyte for IT-SOFC [J].

Lee, Dokyol ;

Han, Ju-Hyeong ;

Chun, Youngsuk ;

Song, Rak-Hyun ;

Shin, Dong Ryul .

JOURNAL OF POWER SOURCES, 2007, 166 (01) :35-40

[10] Hydrothermal synthesis and luminescence of CaMO4:RE3+ (M = W, Mo; RE = Eu, Tb) submicro-phosphors [J].

Lei, Fang ;

Yan, Bing .

JOURNAL OF SOLID STATE CHEMISTRY, 2008, 181 (04) :855-862

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