Comparative Studies of SrCo1-xTaxO3-δ (x=0.05-0.4) Oxides as Cathodes for Low-Temperature Solid-Oxide Fuel Cells

被引：57

作者：

Li, Mengran ^{[1
]}

Zhou, Wei ^{[1
]}

Zhu, Zhonghua ^{[1
]}

机构：

[1] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia

来源：

CHEMELECTROCHEM | 2015年 / 2卷 / 09期

基金：

澳大利亚研究理事会;

关键词：

cathodes; fuel cells; oxygen reduction reaction; perovskite; tantalum; TRANSPORT-PROPERTIES; PHASE-TRANSITIONS; OXYGEN REDUCTION; PEROVSKITE; PERFORMANCE; STABILITY; SR2CO2O5;

D O I：

10.1002/celc.201500157

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ways to address the sluggish ORR kinetics of cathodes have become an area of great interest and significance for the deployment of solid-oxide fuel cells (SOFCs) that operate at lower temperatures. A series of Sr(Co,Ta)O3-delta oxides with multilevel substitutions of tantalum (Ta5+) ions have been studied as cathodes for SOFCs in terms of their crystal structures, electrochemical properties, and durability. The effects of doping tantalum on the oxygen reduction reaction (ORR) have been ex-plored and discussed. Not only can the crystallite structure of SrCoO3-delta be stabilized by incorporating Ta5+ at elevated temperatures, but the activity towards ORR can also be significantly enhanced by doping relatively small amounts of Ta5+ (<= 20mol%), which is probably due to the improved oxygen surface exchange that arises from the positive effects of Ta5+ dopants on the oxidation states of cobalt ions.

引用

页码：1331 / 1338

页数：8

共 42 条

[1] Factors governing oxygen reduction in solid oxide fuel cell cathodes [J].

Adler, SB .

CHEMICAL REVIEWS, 2004, 104 (10) :4791-4843

[2] A New Family of Mo-Doped SrCoO3-δ Perovskites for Application in Reversible Solid State Electrochemical Cells [J].

Aguadero, A. ;

Perez-Coll, D. ;

Alonso, J. A. ;

Skinner, S. J. ;

Kilner, J. .

CHEMISTRY OF MATERIALS, 2012, 24 (14) :2655-2663

[3] SrCo1-xSbxO3-δ perovskite oxides as cathode materials in solid oxide fuel cells [J].

Aguadero, A. ;

Perez-Coll, D. ;

de la Calle, C. ;

Alonso, J. A. ;

Escudero, M. J. ;

Daza, L. .

JOURNAL OF POWER SOURCES, 2009, 192 (01) :132-137

[4] SrCo0.95Sb0.05O3-δ as Cathode Material for High Power Density Solid Oxide Fuel Cells [J].

Aguadero, Ainara ;

Antonio Alonso, Jose ;

Perez-Coll, Domingo ;

de la Calle, Cristina ;

Fernandez-Diaz, Maria Teresa ;

Goodenough, John B. .

CHEMISTRY OF MATERIALS, 2010, 22 (03) :789-798

[5] Highly active and stable (La0.24Sr0.16Ba0.6)(Co0.5Fe0.44Nb0.06)O3-δ (LSBCFN) cathodes for solid oxide fuel cells prepared by a novel mixing synthesis method [J].

Chen, Xinbing ;

Jiang, San Ping .

JOURNAL OF MATERIALS CHEMISTRY A, 2013, 1 (15) :4871-4878

[6] Tantalum stabilized SrCoO3-δ perovskite membrane for oxygen separation [J].

Chen, Xinzhi ;

Huang, Liu ;

Wei, Yanying ;

Wang, Haihui .

JOURNAL OF MEMBRANE SCIENCE, 2011, 368 (1-2) :159-164

[7] Highly efficient and robust cathode materials for low-temperature solid oxide fuel cells: PrBa0.5Sr0.5Co2-xFexO5+δ [J].

Choi, Sihyuk ;

Yoo, Seonyoung ;

Kim, Jiyoun ;

Park, Seonhye ;

Jun, Areum ;

Sengodan, Sivaprakash ;

Kim, Junyoung ;

Shin, Jeeyoung ;

Jeong, Hu Young ;

Choi, YongMan ;

Kim, Guntae ;

Liu, Meilin .

SCIENTIFIC REPORTS, 2013, 3

[8] Correlation between reconstructive phase transitions and transport properties from SrCoO2.5 brownmillerite: A neutron diffraction study [J].

de la Calle, C. ;

Aguadero, A. ;

Alonso, J. A. ;

Fernandez-Diaz, M. T. .

SOLID STATE SCIENCES, 2008, 10 (12) :1924-1935

[9] B Cation Ordered Double Perovskite Ba2CoMo0.5Nb0.5O6-δ As a Potential SOFC Cathode [J].

Deng, Z. Q. ;

Smit, J. P. ;

Niu, H. J. ;

Evans, G. ;

Li, M. R. ;

Xu, Z. L. ;

Claridge, J. B. ;

Rosseinsky, M. J. .

CHEMISTRY OF MATERIALS, 2009, 21 (21) :5154-5162

[10] Relationship between transport properties and phase transformations in mixed-conducting oxides [J].

Deng, ZQ ;

Yang, WS ;

Liu, W ;

Chen, CS .

JOURNAL OF SOLID STATE CHEMISTRY, 2006, 179 (02) :362-369

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