Preparation, characterization and electrical property of Mn-doped ceria-based oxides

CH Y. Kang, H. Kusaba, H. Yahiro, Kazunari Sasaki, Y. Teraoka

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Abstract

Manganese-doped ceria-based oxides, Ce1-xMnxO2-δ (0.05 ≤ x ≤ 0.3) and Ce1-x-yGdxMnyO2-δ ̇ (0.05 ≤ x≤ 0.2, 0.05 ≤ y ≤ 0.25) were synthesized, and crystal phase analysis by XRD and measurements of electrical properties were performed. Solubility limit of Mn in Ce1-xMnxO2-δ ̇ seemed to be between 5 mol% and 10 mol% and Mn3O4 was the main by-product above the solubility limit in the case of heat treatment at 1300 °C. Judging from the oxygen partial pressure dependence of total conductivity and emf measurements, Ce1-xMnxO2-δ ̇ is a single-phase mixed conductor within the composition below the solubility limit, and when the composition of Mn exceeds the solubility limit, it becomes the dual-phase mixed conductor of Ce1-xMnxO2-δ ̇ and Mn3O4. The doing of Mn in gadlia-doped ceria, Ce1-x-yGdxMnyO2-δ ̇ (0.05 ≤ x ≤ 0.2, 0.05 ≤ y ≤ 0.25), was more difficult than that in CeO2 presumably due to the preferential reaction between Gd and Mn to give GdMnO3 to the GDC solid solution formation, and the Mn doping seems not to be so effective in preparing the mixed ionic-electronic conductor based on GDC.

Original languageEnglish
Pages (from-to)1799-1802
Number of pages4
JournalSolid State Ionics
Volume177
Issue number19-25 SPEC. ISS.
DOIs
Publication statusPublished - Oct 15 2006

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Cerium compounds
Oxides
Electric properties
solubility
Solubility
electrical properties
preparation
oxides
conductors
Manganese
Chemical analysis
Partial pressure
pressure dependence
partial pressure
Byproducts
manganese
Solid solutions
heat treatment
solid solutions
Heat treatment

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Preparation, characterization and electrical property of Mn-doped ceria-based oxides. / Kang, CH Y.; Kusaba, H.; Yahiro, H.; Sasaki, Kazunari; Teraoka, Y.

In: Solid State Ionics, Vol. 177, No. 19-25 SPEC. ISS., 15.10.2006, p. 1799-1802.

Research output: Contribution to journalArticle

Kang, CHY, Kusaba, H, Yahiro, H, Sasaki, K & Teraoka, Y 2006, 'Preparation, characterization and electrical property of Mn-doped ceria-based oxides', Solid State Ionics, vol. 177, no. 19-25 SPEC. ISS., pp. 1799-1802. https://doi.org/10.1016/j.ssi.2006.04.016
Kang, CH Y. ; Kusaba, H. ; Yahiro, H. ; Sasaki, Kazunari ; Teraoka, Y. / Preparation, characterization and electrical property of Mn-doped ceria-based oxides. In: Solid State Ionics. 2006 ; Vol. 177, No. 19-25 SPEC. ISS. pp. 1799-1802.
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