Preparation and Oxygen Permeation Properties of TM-doped (Ba0.3Sr0.2La0.5)2(In1-xTMx)2O5+δ(TM=Fe, Co, Mn, Sn)

Yusuke Aizumi; Hitoshi Takamura; Atsunori Kamegawa; Masuo Okada

doi:10.14853/pcersj.2002F.0.146.0

15th Fall Meeting of The Ceramic Society of Japan

DOI https://doi.org/10.14853/pcersj.2002F.0.146.0

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Host: The Ceramic Society of Japan

Preparation and Oxygen Permeation Properties of TM-doped (Ba_0.3Sr_0.2La_0.5)₂(In_1-xTM_x)₂O_5+δ(TM=Fe, Co, Mn, Sn)

Yusuke Aizumi, Hitoshi Takamura, Atsunori Kamegawa, Masuo Okada

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Keywords: mixed ionic electronic conductor, oxygen permeation, electrical conductivity, Ba₂In₂O₅, brownmillerite structure, perovskite structure

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Abstract

The preparation, electrical conductivity and oxygen permeability of TM-doped (Ba_0.3Sr_0.2La_0.5)₂(In_1-xTM_x)₂O_5+δ(TM=Fe, Co, Mn, Sn), which based on a brownmillerite-type structure, have been investigated. The XRD analysis of all the samples showed cubic perovskite-type structure due to La³⁺ doping on A-site. Oxygen flux density increased with increasing amount of doped Fe and it attained a maximum at 0.4. The maximum value of 0.5μmol·s^-1middot;cm^-2 was obtained under He gas flow at 950°C. For Fe-doped specimens, the data for x≥0.2 was dominated by p-type conduction at high P(O₂).

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