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

doi:10.1016/j.ssi.2006.04.051

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

工学研究科・知能デバイス材料学専攻

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 (Ce_0.9Sm_0.1)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
巻	177
号	19-25 SPEC. ISS.
DOI	https://doi.org/10.1016/j.ssi.2006.04.051
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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10.1016/j.ssi.2006.04.051

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引用スタイル

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

abstract = "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.",

keywords = "Cathode, Ceria, Composite, Mixed conductor, Oxygen permeable ceramics, Thin film",

author = "Hitoshi Takamura and Yasuyuki Koshino and Atsunori Kamegawa and Masuo Okada",

note = "Funding Information: This work has been supported by CREST of Japan Science and Technology Agency (JST), The Japan Research and Development Center for Materials (JRCM), and Industrial Technology Research Grant Program in 2005 from New Energy and Industrial Technology Development Organization (NEDO) of Japan. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

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AU - Koshino, Yasuyuki

AU - Kamegawa, Atsunori

AU - Okada, Masuo

N1 - Funding Information: This work has been supported by CREST of Japan Science and Technology Agency (JST), The Japan Research and Development Center for Materials (JRCM), and Industrial Technology Research Grant Program in 2005 from New Energy and Industrial Technology Development Organization (NEDO) of Japan. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.

PY - 2006/10/15

Y1 - 2006/10/15

N2 - 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.

AB - 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.

KW - Cathode

KW - Ceria

KW - Composite

KW - Mixed conductor

KW - Oxygen permeable ceramics

KW - Thin film

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