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Oxide ion and electron mixed conduction in sintered oxides of the system Bi2O3-Pr6O11

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Abstract

Oxide ion and electron conduction in sintered oxides of the system Bi2O3-Pr6O11 have been studied. Two types of rhombohedral phase are formed in this system. Oxide ion conduction is predominant in the rhombohedralβ-phase present in the composition range less than 35 mol% Pr2O11/3. Electronic (hole) conduction appeared in addition to oxide ion conduction in another rhombohedral phase containing more than 40 mol% Pr2O11/3. This phase is of the LaOF-type which is a distorted defect fluoritetype structure. Electronic conduction in the LaOF-type phase is considered to be due to the change of oxidation state of praseodymium at high temperatures.

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Authors and Affiliations

  1. Department of Environmental Chemistry and Technology, Faculty of Engineering, Tottori University, Minami 4-101, Koyama-cho, 680, Tottori, Japan

    T. Esaka, H. Iwahara & H. Kunieda

Authors
  1. T. Esaka
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  2. H. Iwahara
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  3. H. Kunieda
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Esaka, T., Iwahara, H. & Kunieda, H. Oxide ion and electron mixed conduction in sintered oxides of the system Bi2O3-Pr6O11 . J Appl Electrochem 12, 235–240 (1982). https://doi.org/10.1007/BF00616907

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  • DOI: https://doi.org/10.1007/BF00616907

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