Ir-YSZ nano-composite electrodes for oxygen sensors

Teiichi Kimura; Takashi Goto

doi:10.1016/j.surfcoat.2004.10.058

Ir-YSZ nano-composite electrodes for oxygen sensors

Teiichi Kimura, Takashi Goto

Materials Processing and Characterization Division

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Iridium (Ir)-yttrium-stabilized zirconia (YSZ) nano-composite electrodes were prepared by MOCVD, and their electrode properties were examined. Ir-YSZ nano-composite electrodes consisted of amorphous YSZ and Ir particles of 5-10 nm in diameter. The interfacial conductivity for the Ir-YSZ electrodes was almost 1000 times higher than that of sputtered-Pt electrodes due to large contact area between YSZ and Ir in nano-composite electrodes and high catalytic activity of Ir nano-particles. The electro-motive-force values of the oxygen concentration cell constructed from the Ir-YSZ electrodes and YSZ electrolyte showed the Nernstian theoretical response within 10-0020 s at 650 °C.

Original language	English
Pages (from-to)	36-39
Number of pages	4
Journal	Surface and Coatings Technology
Volume	198
Issue number	1-3 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.surfcoat.2004.10.058
Publication status	Published - 2005 Aug 1

Keywords

AC impedance
Catalytic activity
Electrode
Iridium
Organometallic CVD
Oxygen sensor

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.surfcoat.2004.10.058

Cite this

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title = "Ir-YSZ nano-composite electrodes for oxygen sensors",

abstract = "Iridium (Ir)-yttrium-stabilized zirconia (YSZ) nano-composite electrodes were prepared by MOCVD, and their electrode properties were examined. Ir-YSZ nano-composite electrodes consisted of amorphous YSZ and Ir particles of 5-10 nm in diameter. The interfacial conductivity for the Ir-YSZ electrodes was almost 1000 times higher than that of sputtered-Pt electrodes due to large contact area between YSZ and Ir in nano-composite electrodes and high catalytic activity of Ir nano-particles. The electro-motive-force values of the oxygen concentration cell constructed from the Ir-YSZ electrodes and YSZ electrolyte showed the Nernstian theoretical response within 10-0020 s at 650 °C.",

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pages = "36--39",

journal = "Surface and Coatings Technology",

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TY - JOUR

T1 - Ir-YSZ nano-composite electrodes for oxygen sensors

AU - Kimura, Teiichi

AU - Goto, Takashi

PY - 2005/8/1

Y1 - 2005/8/1

N2 - Iridium (Ir)-yttrium-stabilized zirconia (YSZ) nano-composite electrodes were prepared by MOCVD, and their electrode properties were examined. Ir-YSZ nano-composite electrodes consisted of amorphous YSZ and Ir particles of 5-10 nm in diameter. The interfacial conductivity for the Ir-YSZ electrodes was almost 1000 times higher than that of sputtered-Pt electrodes due to large contact area between YSZ and Ir in nano-composite electrodes and high catalytic activity of Ir nano-particles. The electro-motive-force values of the oxygen concentration cell constructed from the Ir-YSZ electrodes and YSZ electrolyte showed the Nernstian theoretical response within 10-0020 s at 650 °C.

AB - Iridium (Ir)-yttrium-stabilized zirconia (YSZ) nano-composite electrodes were prepared by MOCVD, and their electrode properties were examined. Ir-YSZ nano-composite electrodes consisted of amorphous YSZ and Ir particles of 5-10 nm in diameter. The interfacial conductivity for the Ir-YSZ electrodes was almost 1000 times higher than that of sputtered-Pt electrodes due to large contact area between YSZ and Ir in nano-composite electrodes and high catalytic activity of Ir nano-particles. The electro-motive-force values of the oxygen concentration cell constructed from the Ir-YSZ electrodes and YSZ electrolyte showed the Nernstian theoretical response within 10-0020 s at 650 °C.

KW - AC impedance

KW - Catalytic activity

KW - Electrode

KW - Iridium

KW - Organometallic CVD

KW - Oxygen sensor

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DO - 10.1016/j.surfcoat.2004.10.058

M3 - Article

AN - SCOPUS:20744443814

SN - 0257-8972

VL - 198

SP - 36

EP - 39

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 1-3 SPEC. ISS.

ER -

Ir-YSZ nano-composite electrodes for oxygen sensors

Abstract

Keywords

ASJC Scopus subject areas

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