Electrical conductivity studies on LAMOX based electrolyte materials for solid oxide fuel cells

被引:7
|
作者
Srijith [1 ]
Lakhanlal [1 ]
Das, Ashmita [1 ,2 ]
Dasari, Hari Prasad [1 ]
Saidutta, M. B. [1 ]
机构
[1] Natl Inst Technol Karnataka, Dept Chem Engn, Energy & Catalysis Mat Lab, Surathkal 575025, India
[2] Indian Inst Technol, Ctr Rural Technol, Gauhati 781039, Assam, India
关键词
LAMOX based electrolytes; Electrical conductivity; DC four-Probe method; High-temperature XRD study; PRASEODYMIUM DOPED CERIA; ION CONDUCTORS; TRANSPORT-PROPERTIES; CHEMICAL-SYNTHESIS; PHASE-TRANSITIONS; LA2MO2O9; SUBSTITUTION; STABILITY; TUNGSTEN; SINTERABILITY;
D O I
10.1016/j.ceramint.2022.05.198
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this study, the electrical conductivity of the LAMOX based electrolytes (La1.8Dy0.2Mo2-xWxO9 (x = 0, 0.1, 0.2, 0.5, and 1), and La1.8Dy0.2Mo2-xGaxO9 (x = 0.1)) synthesized by the citrate complexion method has been studied using DC four-probe method. The electrical conductivity of the electrolytes is measured in the temperature range of 800-400 degrees C in the air (similar to 100 ml min(-1)). The effect of W and Ga substitution at the Mo site on the electrical conductivity is evaluated. The long-term electrical conductivity stability test (time on stream) (5 h) is conducted at 650, 580, and 520 degrees C to study the effect of possible phase transition on electrical conductivity. A high-temperature XRD study is also conducted in the temperature range of 500-650 degrees C (during heating and cooling) on selected electrolyte materials (La1.8Dy0.2Mo2-xWxO9 (x = 0 and 0.1) and La(1.8)Dy(0.2)Mo(2-x)G(ax)O(9) (x = 0.1)) to study the alpha <->beta phase transition. The electrical conductivity of these electrolytes in the air at 800 degrees C is in the range of 5.3 x 10(-2) - 14 x 10(-2) S cm(-1). The activation energy (E-A) of these electrolytes is in the range of 1.11-1.62 eV. The VTF parameters sigma(o), B, and T-o are in the range of 67.46-395.88 S cm(-1) K-0.5, 0.122-0.254 eV, and 247-347 degrees C, respectively. The La1.8Dy0.2Mo2-xWxO9 (x = 0.1) shows highest electrical conductivity (14 x 10(-2) S cm(-1), E-A = 1.54 eV) among all electrolytes in air at 800 degrees C and for this material the VTF parameters sigma(o), B, and T-o are 170.32 S cm(-1) K-0.5, 0.153 eV, and 302 degrees C, respectively.
引用
收藏
页码:29229 / 29237
页数:9
相关论文
共 50 条
  • [21] Materials for Solid Oxide Fuel Cells
    Jacobson, Allan J.
    CHEMISTRY OF MATERIALS, 2010, 22 (03) : 660 - 674
  • [22] Electrical Properties of Ba doped LSGM as Electrolyte Material for Solid Oxide Fuel Cells
    Raghvendra
    Singh, Rajesh Kumar
    Singh, Prabhakar
    SOLID STATE PHYSICS, VOL 57, 2013, 1512 : 976 - 977
  • [23] Theoretical calculation of the electrical potential at the electrode/electrolyte interfaces of solid oxide fuel cells
    Celik, Ismail
    Pakalapati, S. Raju
    Salazar-Villalpando, Maria D.
    JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY, 2005, 2 (04): : 238 - 245
  • [24] Effects of Cr/Ti co-doping on the electrical and thermal properties of tantalum-based electrolyte materials for solid oxide fuel cells
    Ding, Shuang
    Zhang, Junwei
    Yang, Shun
    Song, Ziyang
    Jiang, Hong
    Li, Changjiu
    Chen, Yongjun
    JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2020, 31 (20) : 17307 - 17319
  • [25] Effects of Cr/Ti co-doping on the electrical and thermal properties of tantalum-based electrolyte materials for solid oxide fuel cells
    Shuang Ding
    Junwei Zhang
    Shun Yang
    Ziyang Song
    Hong Jiang
    Changjiu Li
    Yongjun Chen
    Journal of Materials Science: Materials in Electronics, 2020, 31 : 17307 - 17319
  • [26] Ceria-based materials for solid oxide fuel cells
    V. V. Kharton
    F. M. Figueiredo
    L. Navarro
    E. N. Naumovich
    A. V. Kovalevsky
    A. A. Yaremchenko
    A. P. Viskup
    A. Carneiro
    F. M. B. Marques
    J. R. Frade
    Journal of Materials Science, 2001, 36 : 1105 - 1117
  • [27] Ceria-based materials for solid oxide fuel cells
    Kharton, VV
    Figueiredo, FM
    Navarro, L
    Naumovich, EN
    Kovalevsky, AV
    Yaremchenko, AA
    Viskup, AP
    Carneiro, A
    Marques, FMB
    Frade, JR
    JOURNAL OF MATERIALS SCIENCE, 2001, 36 (05) : 1105 - 1117
  • [28] Synthesis and calorimetric studies of oxide multilayer systems: Solid oxide fuel cell cathode and electrolyte materials
    Kemik, Nihan
    Ushakov, Sergey V.
    Schichtel, Nicole
    Korte, Carsten
    Takamura, Yayoi
    Navrotsky, Alexandra
    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2010, 28 (04): : C5A1 - C5A5
  • [29] Some studies on materials and methane catalysis for solid oxide fuel cells
    Huang, Ta-Jen
    NEW DEVELOPMENT AND APPLICATION IN CHEMICAL REACTION ENGINEERING, 4TH ASIA-PACIFIC CHEMICAL REACTION ENGINEERING SYMPOSIUM (APCRE 05), 2006, 159 : 97 - 102
  • [30] Effect of alumina nanofiller on the viscosity and electrical conductivity of glass-based seals for solid oxide fuel cells
    Lee, Dong Bok
    Park, Sung-Min
    Jo, Sung-Mi
    Kim, Eun-Jeong
    Park, Sung
    Lee, Jae Chun
    Lee, Hae-Weon
    Lee, Jong-Ho
    RESEARCH ON CHEMICAL INTERMEDIATES, 2014, 40 (07) : 2423 - 2429