Electrical and stability performance of anode-supported solid oxide fuel cells with strontium- and magnesium-doped lanthanum gallate thin electrolyte

被引：71

作者：

Guo, Weimin ^{[1
]}

Liu, Jiang ^{[1
]}

Zhang, Yaohui ^{[1
]}

机构：

[1] S China Univ Technol, Coll Chem, Guangzhou 510640, Guangdong, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 13期

关键词：

SOFCs; La0.9Sr0.1Ga0.8Mg0.2O3-delta; centrifugal casting; co-firing; stability;

D O I：

10.1016/j.electacta.2008.01.039

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Anode-supported solid oxide fuel cells (SOFCs) comprising NiO-samarium-doped ceria (SDC) (Sm0.2Ce0.8O1.9) composite anode, thin tri-layer electrolyte, and La0.6Sr0.4Co0.8Fe0.2O3 (LSCF)-La0.9Sr0.1Ga0.8Mg0.2O3-delta (LSGM) composite cathode were fabricated. The thin tri-layer consisting of an 11-mu m thick LSGM electrolyte layer and a 12-mu m thick La0.4Ce0.6O1.8 (LDC) layer on each side of the LSGM was prepared by centrifugal casting and co-firing technique. The performance of the cells operated with humidified H-2 as fuel and ambient air as oxidant showed a maximum power density of 1.23 W cm(-2) at 800 degrees C. A stability test of about 100 h was carried out and some deterioration of output power was observed, while the open circuit voltage (OCV) kept unchanged. Impedance measurements showed that both the electrolyte ohmic resistance and the electrode polarization increased with time and the latter dominated the degradation. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：4420 / 4427

页数：8

共 22 条

[1] Electrochemical evaluation of La0.6Sr0.4CoO3-La0.45Ce0.55O2 composite cathodes for anode-supported La0.45Ce0.55O2-La0.9Sr0.1Ga0.8Mg0.2O2.85 bilayer electrolyte solid oxide fuel cells [J].

Bi, ZH ;

Cheng, MJ ;

Dong, YL ;

Wu, HJ ;

She, YC ;

Yi, BL .

SOLID STATE IONICS, 2005, 176 (7-8) :655-661

[2] A high-performance anode-supported SOFC with LDC-LSGM bilayer electrolytes [J].

Bi, ZH ;

Yi, BL ;

Wang, ZW ;

Dong, YL ;

Wu, HJ ;

She, YC ;

Cheng, MJ .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2004, 7 (05) :A105-A107

[3] Behavior of lanthanum-doped ceria and Sr-, Mg-doped LaGaO3 electrolytes in an anode-supported solid oxide fuel cell with a La0.6Sr0.4CoO3 cathode [J].

Bi, Zhonghe ;

Dong, Yonglai ;

Cheng, Mojie ;

Yi, Baolian .

JOURNAL OF POWER SOURCES, 2006, 161 (01) :34-39

[4] PREPARATION OF YBA2CU3O7-DELTA BY CITRATE SYNTHESIS AND PYROLYSIS [J].

BLANK, DHA ;

KRUIDHOF, H ;

FLOKSTRA, J .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1988, 21 (01) :226-227

[5] Characterisation, conductivity and mechanical properties of the oxygen-ion conductor La0.9Sr0.1Ga0.8Mg0.2O3-x [J].

Drennan, J ;

Zelizko, V ;

Hay, D ;

Ciacchi, FT ;

Rajendran, S ;

Badwal, SPS .

JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (01) :79-83

[6] Performance of intermediate temperature solid oxide fuel cells with La(Sr)Ga(Mg)O3 electrolyte film [J].

Fukui, T ;

Ohara, S ;

Murata, K ;

Yoshida, H ;

Miura, K ;

Inagaki, T .

JOURNAL OF POWER SOURCES, 2002, 106 (1-2) :142-145

[7] Performance of intermediate temperature (600-800°C) solid oxide fuel cell based on Sr and Mg doped lanthanum-gallate electrolyte [J].

Gong, Wenquan ;

Gopalan, Srikanth ;

Pal, Uday B. .

JOURNAL OF POWER SOURCES, 2006, 160 (01) :305-315

[8] Increasing power density of LSGM-based solid oxide fuel cells using new anode materials [J].

Huang, KQ ;

Wan, JH ;

Goodenough, JB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (07) :A788-A794

[9] DOPED LAGAO3 PEROVSKITE-TYPE OXIDE AS A NEW OXIDE IONIC CONDUCTOR [J].

ISHIHARA, T ;

MATSUDA, H ;

TAKITA, Y .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (09) :3801-3803

[10] Oxide ion conductivity in La0.8Sr0.2Ga0.8Mg0.2-XNiXO3 perovskite oxide and application for the electrolyte of solid oxide fuel cells [J].

Ishihara, T ;

Shibayama, T ;

Nishiguchi, H ;

Takita, Y .

JOURNAL OF MATERIALS SCIENCE, 2001, 36 (05) :1125-1131

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