Electrode and oxygen permeation properties of (Ce, Sm)O2-MFe2O4 composite thin films (M = Co and Mn)

Hitoshi Takamura, Yasuyuki Koshino, Atsunori Kamegawa, Masuo Okada

研究成果: Article査読

28 被引用数 (Scopus)

抄録

This paper describes the electrode and oxygen permeation properties of Sm-doped CeO2-MFe2O4 composites prepared on a Sm-doped CeO2 electrolyte, where M = Co and Mn. The porous and thin-film samples were prepared by means of citrate-based liquid-mix and chemical solution deposition techniques, respectively. For Cole-Cole plots of porous and thin-film electrodes, two semi-circles corresponding to interface and chemical impedances were observed. The thin-film electrode of 1-μm-thick (Ce0.9Sm0.1)O2-30 vol.%CoFe2O4 (30CFO) composites showed a current density of 509 mA/cm2 at 900 °C under a cathodic overpotential of 159 mV. The 30CFO thin film exhibited an oxygen flux density of 1.3 μmol/cm2 s at 900 °C under pO2 of 1.2 × 10- 20 atm.

本文言語English
ページ(範囲)2185-2189
ページ数5
ジャーナルSolid State Ionics
177
19-25 SPEC. ISS.
DOI
出版ステータスPublished - 2006 10月 15

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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