Engineering composite oxide SOFC anodes for efficient oxidation of methane

被引：134

作者：

Kim, G. ^{[1
]}

Corre, G. ^{[2
]}

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

Vohs, J. M. ^{[1
]}

Gorte, R. J. ^{[1
]}

机构：

[1] Univ Penn, Dept Chem & Biomol Engn, Philadelphia, PA 19104 USA

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

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2008年 / 11卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1149/1.2817809

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ceramic anodes for solid oxide fuel cells (SOFCs) were prepared by aqueous impregnation of nitrate salts to produce composites with 45 wt % La0.8Sr0.2Cr0.5Mn0.5O3 (LSCM ) in a 65% porous yttria-stabilized zirconia (YSZ) scaffold. Scanning electron micrographs indicate that the LSCM coats the YSZ pores following calcination at 1473 K. Composites produced in this manner exhibit conductivities at 1073 K of approximately 1 S/cm in air and 0.1 S/cm in humidified H-2. A SOFC with a composite anode composed of 45 wt % LSCM, 0.5 wt % Pd, and 5 wt % ceria exhibited maximum power densities at 1073 K of 1.1 and 0.71 W cm(-2) in humidified (3% H2O) H-2 and methane, respectively. (c) 2007 The Electrochemical Society.

引用

页码：B16 / B19

页数：4

共 22 条

[1] Advanced anodes for high-temperature fuel cells [J].

Atkinson, A ;

Barnett, S ;

Gorte, RJ ;

Irvine, JTS ;

Mcevoy, AJ ;

Mogensen, M ;

Singhal, SC ;

Vohs, J .

NATURE MATERIALS, 2004, 3 (01) :17-27

[2] A symmetrical solid oxide fuel cell demonstrating redox stable perovskite electrodes [J].

Bastidas, DM ;

Tao, SW ;

Irvine, JTS .

JOURNAL OF MATERIALS CHEMISTRY, 2006, 16 (17) :1603-1605

[3] The reduction of nickel-zirconia cermet anodes and the effects on supported thin electrolytes [J].

Cassidy, M ;

Lindsay, G ;

Kendall, K .

JOURNAL OF POWER SOURCES, 1996, 61 (1-2) :189-192

[4] High performance cathode-supported SOFC with perovskite anode operating in weakly humidified hydrogen and methane [J].

Chen, X. J. ;

Liu, Q. L. ;

Chan, S. H. ;

Brandon, N. P. ;

Khor, Khiam Aik .

ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (04) :767-772

[5] An examination of SOFC anode functional layers based on ceria in YSZ [J].

Gross, M. D. ;

Vohs, J. M. ;

Gorte, R. J. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (07) :B694-B699

[6] A strategy for achieving high performance with SOFC ceramic anodes [J].

Gross, M. D. ;

Vohs, J. M. ;

Gorte, R. J. .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2007, 10 (04) :B65-B69

[7] Low-temperature fabrication of oxide composites for solid-oxide fuel cells [J].

He, HP ;

Huang, YY ;

Regal, J ;

Boaro, M ;

Vohs, JM ;

Gorte, RJ .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2004, 87 (03) :331-336

[8] SOFC cathodes prepared by infiltration with various LSM precursors [J].

Huang, Y ;

Vohs, JM ;

Gorte, RJ .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2006, 9 (05) :A237-A240

[9] Double perovskites as anode materials for solid-oxide fuel cells [J].

Huang, YH ;

Dass, RI ;

Xing, ZL ;

Goodenough, JB .

SCIENCE, 2006, 312 (5771) :254-257

[10] Characterization of LSM-YSZ composites prepared by impregnation methods [J].

Huang, YY ;

Vohs, JM ;

Gorte, RJ .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (07) :A1347-A1353

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