Incorporation and conduction of proton in Sr-doped LaMO3 (M=Al, Sc, In, Yb, Y)

Yuji Okuyama, Takeshi Kozai, Shohei Ikeda, Maki Matsuka, Takaaki Sakai, Hiroshige Matsumoto

研究成果: ジャーナルへの寄稿学術誌査読

49 被引用数 (Scopus)


In order to clarify the effect of the B site species in ABO3 perovskite oxides on the proton transport properties, the proton incorporation into a series of La0.9Sr0.1MO3-δ, (M = Al, Sc, In, Yb, Y) was studied by measuring the electrical conductivity and electromotive forces of the gas concentration cells, and by a thermogravimetric analysis. The proton concentration and electrical conductivity increased in the order of the B site species, Al < Y=Yb < Sc < In and Al < Y=Yb < In < Sc, respectively. La0.9Sr0.1AlO 3-δ showed an oxide ion conductivity, while La 0.9Sr0.1YbO3-δ and La 0.9Sr0.1YO3-δ exhibited a protonic conductivity in the temperature range of 573-1173 K. La0.9Sr 0.1ScO3-δ and La0.9Sr 0.1InO3-δ showed a protonic conductivity under 873 K, and a mixed proton and oxide ion conductivity at 1073 K.

ジャーナルElectrochimica Acta
出版ステータス出版済み - 4月 10 2014

!!!All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 電気化学


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