Influence of La2Mo2O9 on the sintering behavior and electrochemical properties of gadolinium-doped ceria

被引：6
作者：
Buvat, Gaetan [1 ,2 ]
Quarez, Eric [1 ]
Joubert, Olivier [1 ]
机构：
[1] Univ Nantes, UMR CNRS 6502, Inst Mat Jean Rouxel Nantes IMN, 2 Rue Houssiniere, F-44322 Nantes 03, France
[2] Univ Maine, UMR CNRS 6283, IMMM, Ave Olivier Messiaen, F-72085 Le Mans, France
来源：
CERAMICS INTERNATIONAL | 2017年 / 43卷 / 13期
关键词：
Gadolinium-doped ceria; CGO; La2Mo2O9; Sintering; Dilatometry; Electrochemical impedance spectroscopy; OXIDE FUEL-CELL; SINGLE CHAMBER CONDITIONS; SOLID-SOLUTIONS; OXYGEN PERMEABILITY; ION CONDUCTORS; CONDUCTIVITY; ELECTROLYTES; ANODE; CGO; CERAMICS;
D O I：
10.1016/j.ceramint.2017.05.036
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Gadolinium-doped ceria (known as CGO or GDC) is a good oxide-ion conductor which presents potential application for solid-state electrochemical devices. However, one of the main drawbacks of this material is the high sintering temperature required to obtain dense ceramic. In this paper, we report a new way to reduce densification temperature of CGO by adding x weight percent of La2Mo2O9 material (0 <= x <= 10). This latter is also a good oxide-ion conductor at high temperature (> 580 degrees C) which allows the preservation of the electrochemical properties of CGO as shown by impedance spectroscopy. The sintering behavior is then studied using dilatometric measurements and mechanism of densification is discussed.
引用
收藏
页码：10137 / 10143
页数：7
相关论文
共 48 条
[1]  
Bae I. J., 1997, AM CERAM SOC BULL, V80, P1149
[2]   Innovative solid oxide fuel cells based on BaIn0.3Ti0.7O2.85 electrolyte and La2Mo2O9 amorphous reduced phase as anode material [J].
Buvat, Gaetan ;
Quarez, Eric ;
Joubert, Olivier .
JOURNAL OF POWER SOURCES, 2016, 302 :107-113
[3]   Efficiency of a dense thin CGO buffer layer for solid oxide fuel cell operating at intermediate temperature [J].
Constantin, G. ;
Rossignol, C. ;
Briois, P. ;
Billard, A. ;
Dessemond, L. ;
Djurado, E. .
SOLID STATE IONICS, 2013, 249 :98-104
[4]   Physicochemical compatibility of CGO fluorite, LSM and LSCF perovskite electrode materials with La2MO2O9 fast oxide-ion conductor [J].
Corbel, G ;
Mestiri, S ;
Lacorre, P .
SOLID STATE SCIENCES, 2005, 7 (10) :1216-1224
[5]  
Demartin M, 1997, J AM CERAM SOC, V80, P1079, DOI 10.1111/j.1151-2916.1997.tb02949.x
[6]   Hydrothermal synthesis and properties of Ce1-xGdxO2-δ solid solutions [J].
Dikmen, S ;
Shuk, P ;
Greenblatt, M ;
Gocmez, H .
SOLID STATE SCIENCES, 2002, 4 (05) :585-590
[7]   Sintering behavior of UO2-Gd2O3 fuel: Pore formation mechanism [J].
Durazzo, M. ;
Saliba-Silva, A. M. ;
de Carvalho, E. F. Urano ;
Riella, H. G. .
JOURNAL OF NUCLEAR MATERIALS, 2013, 433 (1-3) :334-340
[8]   Improved total conductivity of nanometric samaria-doped ceria powders sintered with molten LiNO3 additive [J].
Esposito, Vincenzo ;
Zunic, Milan ;
Traversa, Enrico .
SOLID STATE IONICS, 2009, 180 (17-19) :1069-1075
[9]   Synthesis and properties of Gadolinium-doped ceria solid solutions for IT-SOFC electrolytes [J].
Fuentes, R. O. ;
Baker, R. T. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (13) :3480-3484
[10]   Oxide ion diffusion in optimised LAMOX materials [J].
Georges, S ;
Skinner, SJ ;
Lacorre, P ;
Steil, MC .
DALTON TRANSACTIONS, 2004, (19) :3101-3105
12345