Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo0.95Ru0.05O3-δ Perovskite as Cathode Materials for SOFCs

被引:8
作者
Sydyknazar, Sabina [1 ]
Cascos, Vanessa [1 ]
Troncoso, Loreto [1 ,2 ]
Laura Larralde, Ana [3 ]
Teresa Fernandez-Diaz, Maria [4 ]
Antonio Alonso, Jose [1 ]
机构
[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain
[2] Univ Austral Chile, Inst Mat & Proc Termomecan, Gen Lagos 2086, Valdivia 5111187, Chile
[3] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Quim Inorgan Analit & Quim Fis, INQUIMAE, C1428EGA, Buenos Aires, DF, Argentina
[4] Inst Laue Langevin, BP 156X, F-38042 Grenoble, France
关键词
IT-SOFC; cathode; perovskite; neutron diffraction; SrCoO3; TRANSPORT-PROPERTIES; OXYGEN REDUCTION; X=0.05;
D O I
10.3390/ma12121957
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
We have designed and prepared a novel cathode material for solid oxide fuel cell (SOFC) based on SrCo0.95Ru0.05O3-delta perovskite. We have partially replaced Sr by Ba in Sr0.9Ba0.1Co0.95Ru0.05O3-delta (SBCRO) in order to expand the unit-cell size, thereby improving the ionic diffusion of O2- through the crystal lattice. The characterization of this new oxide has been studied at room temperature by X-ray diffraction (XRD) and neutron powder diffraction (NPD) experiments. At room temperature, SBCRO perovskite crystallizes in the P4/mmm tetragonal space group, as observed from NDP data. The maximum conductivity value of 18.6 S cm(-1) is observed at 850 degrees C. Polarization resistance measurements on LSGM electrolyte demonstrate an improvement in conductivity with respect to the parent Sr-only perovskite cathode. A good chemical compatibility and an adequate thermal expansion coefficient make this oxide auspicious for using it as a cathode in SOFC.
引用
收藏
页数:13
相关论文
共 17 条
  • [1] Recent advances in fuel cell technology and its applications
    Acres, GJK
    [J]. JOURNAL OF POWER SOURCES, 2001, 100 (1-2) : 60 - 66
  • [2] Factors governing oxygen reduction in solid oxide fuel cell cathodes
    Adler, SB
    [J]. CHEMICAL REVIEWS, 2004, 104 (10) : 4791 - 4843
  • [3] Materials development for intermediate-temperature solid oxide electrochemical devices
    Aguadero, Ainara
    Fawcett, Lydia
    Taub, Samuel
    Woolley, Russell
    Wu, Kuan-Ting
    Xu, Ning
    Kilner, John A.
    Skinner, Stephen J.
    [J]. JOURNAL OF MATERIALS SCIENCE, 2012, 47 (09) : 3925 - 3948
  • [4] SrCo0.95Sb0.05O3-δ as Cathode Material for High Power Density Solid Oxide Fuel Cells
    Aguadero, Ainara
    Antonio Alonso, Jose
    Perez-Coll, Domingo
    de la Calle, Cristina
    Fernandez-Diaz, Maria Teresa
    Goodenough, John B.
    [J]. CHEMISTRY OF MATERIALS, 2010, 22 (03) : 789 - 798
  • [5] SrCo1-xRuxO3-δ (x=0.05, 0.1, and 0.15) Perovskites As Outperforming Cathode Material in Intermediate-Temperature Solid Oxide Fuel Cells
    Cascos, V.
    Troncoso, L.
    Fernandez-Diaz, M. T.
    Alonso, J. A.
    [J]. ACS APPLIED ENERGY MATERIALS, 2018, 1 (09): : 4505 - 4513
  • [6] Structural and electrical characterization of the novel SrCo1-xTixO3-δ (x=0.05, 0.1 and 0.15) perovskites: Evaluation as cathode materials in solid oxide fuel cells
    Cascos, V.
    Fernandez-Diaz, M. T.
    Alonso, J. A.
    [J]. RENEWABLE ENERGY, 2019, 133 : 205 - 215
  • [7] New families of Mn+-doped SrCo1-xMxO3-δ perovskites performing as cathodes in solid-oxide fuel cells
    Cascos, V.
    Troncoso, L.
    Alonso, J. A.
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2015, 40 (34) : 11333 - 11341
  • [8] Nb5+-Doped SrCoO3-δ Perovskites as Potential Cathodes for Solid-Oxide Fuel Cells
    Cascos, Vanessa
    Antonio Alonso, Jose
    Teresa Fernandez-Diaz, Maria
    [J]. MATERIALS, 2016, 9 (07):
  • [9] Compositional Engineering of Perovskite Oxides for Highly Efficient Oxygen Reduction Reactions
    Chen, Dengjie
    Chen, Chi
    Zhang, Zhenbao
    Baiyee, Zarah Medina
    Ciucci, Francesco
    Shao, Zongping
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (16) : 8562 - 8571
  • [10] Correlation between reconstructive phase transitions and transport properties from SrCoO2.5 brownmillerite: A neutron diffraction study
    de la Calle, C.
    Aguadero, A.
    Alonso, J. A.
    Fernandez-Diaz, M. T.
    [J]. SOLID STATE SCIENCES, 2008, 10 (12) : 1924 - 1935