Development of anode material based on La-substituted SrTiO3 perovskites doped with manganese and/or gallium for SOFC

被引：54

作者：

Escudero, M. J. ^{[1
,2
]}

Irvine, J. T. S. ^{[2
]}

Daza, L. ^{[1
,3
]}

机构：

[1] CIEMAT, Dpto Energia, E-28040 Madrid, Spain

[2] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland

[3] CSIC, Inst Catalisis & Petroleoquim, E-28049 Madrid, Spain

来源：

JOURNAL OF POWER SOURCES | 2009年 / 192卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

Titanates; Perovskite; Electrical conductivity; Anode; SOFC; OXIDE FUEL-CELLS; ELECTRICAL-CONDUCTIVITY; EXTENDED DEFECTS; METHANE; TEMPERATURE; COEFFICIENT; MANGANITES; OXIDATION;

D O I：

10.1016/j.jpowsour.2008.11.132

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Materials based on La-substituted SrTiO(3) perovskites doped with manganese and/or gallium for SOFC have been studied as novel anodes for solid oxide fuel cell. La(4)Sr(8)Ti(11)Mn(1-x)Ga(x)O(38-delta) (0 <= x <= 1) oxides were synthesized by solid state reaction and the influences of the manganese and/or gallium content on the structure, morphology, thermal properties and electrical conductivity of these materials has been investigated. All compounds show cubic structure with a space group Pm-3m. These compounds presented high electrical conductivity values under reducing atmosphere between 7.9 and 6.8 S cm(-1) at 900 C. For the composition x >= 0.5, the thermal expansion coefficient in both reducing and oxidizing atmosphere are close to that of SOFC electrolytes (8YSZ, CGD). In general, the substitution of Ga by Mn causes a slight reduction in each of the following, lattice parameter, degree of oxygen loss on reduction, thermal expansion coefficient, and electrical conductivity. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：43 / 50

页数：8

共 22 条

[1] Studies on the reorganization of extended defects with increasing n in the perovskite-based La4Srn-4TinO3n+2 series [J].

Canales-Vázquez, J ;

Smith, MJ ;

Irvine, JTS ;

Zhou, WZ .

ADVANCED FUNCTIONAL MATERIALS, 2005, 15 (06) :1000-1008

[2] Electrical properties in La2Sr4Ti6O19-δ:: a potential anode for high temperature fuel cells [J].

Canales-Vázquez, J ;

Tao, SW ;

Irvine, JTS .

SOLID STATE IONICS, 2003, 159 (1-2) :159-165

[3]

CHIANG YM, 1996, PHYS CERAMICS PRINCI, P142

[4] Electricity from ethanol fed SOFCs: the expectations for sustainable development and technological benefits [J].

Douvartzides, SL ;

Coutelieris, FA ;

Demin, AK ;

Tsiakaras, PE .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2004, 29 (04) :375-379

[5] An intermediate-temperature solid oxide fuel cell providing higher performance with hydrocarbons than with hydrogen [J].

Hibino, T ;

Hashimoto, A ;

Asano, K ;

Yano, M ;

Suzuki, M ;

Sano, M .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2002, 5 (11) :A242-A244

[6] Ru-catalyzed anode materials for direct hydrocarbon SOFCs [J].

Hibino, T ;

Hashimoto, A ;

Yano, M ;

Suzuki, M ;

Sano, M .

ELECTROCHIMICA ACTA, 2003, 48 (17) :2531-2537

[7] A study of SOFC anodes based on Cu-Ni and Cu-Co bimetallics in CeO2-YSZ [J].

Lee, SI ;

Vohs, JM ;

Gorte, RJ .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (09) :A1319-A1323

[8] Thermal, electrical, and electrocatalytical properties of lanthanum-doped strontium titanate [J].

Marina, OA ;

Canfield, NL ;

Stevenson, JW .

SOLID STATE IONICS, 2002, 149 (1-2) :21-28

[9] The poisoning effect of sulfur-containing impurity gas on a SOFC anode: Part I. Dependence on temperature, time, and impurity concentration [J].

Matsuzaki, Y ;

Yasuda, I .

SOLID STATE IONICS, 2000, 132 (3-4) :261-269

[10] Electronic conductivity, Seebeck coefficient, defect and electronic structure of nonstoichiometric La1-xSrxMnO3 [J].

Mizusaki, J ;

Yonemura, Y ;

Kamata, H ;

Ohyama, K ;

Mori, N ;

Takai, H ;

Tagawa, H ;

Dokiya, M ;

Naraya, K ;

Sasamoto, T ;

Inaba, H ;

Hashimoto, T .

SOLID STATE IONICS, 2000, 132 (3-4) :167-180

← 1 2 3 →