Reducibility study of oxide-ion conductors La2−xBaxMo2−yAyO9−δ (A = W, Al, Ga) assessed by impedance spectroscopy
作者： D. Li , X.P. Wang , Z. Zhuang , J.X. Wang , C. Li
DOI: 10.1016/J.MATERRESBULL.2008.04.015
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摘要: Abstract The reducibility of oxide-ion conductors La2−xBaxMo2−yWyO9−δ (x = 0, 0.06; y = 0, 0.1, 0.5, 1.0) and La2Mo1.9A0.1O9−δ (A = Al, Ga) were studied in the reducing atmosphere 5%H2 + Ar by means impedance spectroscopy measurement. introduction Ba at La site La2Mo2−yWyO9 can lower sintering temperature about 100 K comparison with samples. All substitutions enhance conductivity improve range from 548 to 923 K. double substitution W as well Al or Ga Mo sites has a better stabilizing effect than single tungsten substitution. Among these best effect.
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