Correlation of thermal properties and electrical conductivity of La0.7Sr0.3Cu0.2Fe0.8O3−δ material for solid oxide fuel cells

被引：0
作者：
Jürgen Wackerl
Thomas Koppitz
Dong-Hyun Peck
Sang-Kuk Woo
Torsten Markus
机构：
[1] Forschungszentrum Jülich GmbH,
[2] Korea Institute of Energy Research (KIER),undefined
来源：
Journal of Applied Electrochemistry | 2009年 / 39卷
关键词：
Cathode; Oxygen stoichiometry; Mixed conductor; SOFC; Perovskite;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A copper-doped ferrite with the chemical composition La0.7Sr0.3Cu0.2Fe0.8O3−δ (LaSrCuFe) was prepared using the classical ceramics method starting from the oxides. The linear thermal expansion coefficient in air was measured in the temperature range between 550 and 1,250 K to be between 10 × 10−6 and 15 × 10−6 K−1. The electrical conductivity in air was found to be higher than 100 S cm−1 for temperatures lower than 1,100 K. A change of oxygen stoichiometry was found above 650 K in an atmosphere of 20 vol% oxygen with argon. This change can be correlated with the electrical conductivity.
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页码：1243 / 1249
页数：6
相关论文
共 85 条
  • [1] Tu H(2004)undefined J Power Source 127 284-undefined
  • [2] Stimming U(2004)undefined Chem Rev 104 4791-undefined
  • [3] Adler SB(1996)undefined Solid State Ionics 86–88 1191-undefined
  • [4] Endo A(2002)undefined J Power Source 106 224-undefined
  • [5] Ihara M(2003)undefined Annu Rev Mater Res 33 361-undefined
  • [6] Komiyama H(2003)undefined Chem Soc Rev 32 17-undefined
  • [7] Yamada K(1999)undefined Ionics 5 129-undefined
  • [8] Horita T(2000)undefined Solid State Ionics 135 719-undefined
  • [9] Yamaji K(2000)undefined Solid State Ionics 138 79-undefined
  • [10] Sakai N(2006)undefined Solid State Ionics 177 1843-undefined
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