Preparation of iridium clusters by MOCVD and their electrochemical properties

T. Goto; J. R. Vargas; T. Hirai

doi:10.1016/S0921-5093(96)10296-3

Preparation of iridium clusters by MOCVD and their electrochemical properties

T. Goto, J. R. Vargas, T. Hirai

Materials Processing and Characterization Division

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

15 Citations (Scopus)

Abstract

Iridium-carbon (Ir-C) cluster films were prepared by metal organic chemical vapor deposition (MOCVD) using an acetylacetonate precursor. The Ir-C cluster films consist of Ir clusters (1 to 3 nm in diameter) and amorphous carbon layers which surround each Ir cluster. The Ir-C cluster films had excellent electrochemical performance as a reversible electrode for zirconia solid electrolyte particularly at low temperatures. The electrode/electrolyte interface conductivity of the Ir-C cluster films was about 100 times greater than that for other conventional platinum electrodes below 773 K. The emf values of the oxygen cell constructed from the Ir-C cluster film electrodes and zirconia electrolytes showed the Nernstian theoretical values even at 573 K.

Original language	English
Pages (from-to)	223-226
Number of pages	4
Journal	Materials Science and Engineering A
Volume	217-218
DOIs	https://doi.org/10.1016/S0921-5093(96)10296-3
Publication status	Published - 1996 Oct 30

Keywords

Iridium-carbon cluster films
MOCVD

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Preparation of iridium clusters by MOCVD and their electrochemical properties",

abstract = "Iridium-carbon (Ir-C) cluster films were prepared by metal organic chemical vapor deposition (MOCVD) using an acetylacetonate precursor. The Ir-C cluster films consist of Ir clusters (1 to 3 nm in diameter) and amorphous carbon layers which surround each Ir cluster. The Ir-C cluster films had excellent electrochemical performance as a reversible electrode for zirconia solid electrolyte particularly at low temperatures. The electrode/electrolyte interface conductivity of the Ir-C cluster films was about 100 times greater than that for other conventional platinum electrodes below 773 K. The emf values of the oxygen cell constructed from the Ir-C cluster film electrodes and zirconia electrolytes showed the Nernstian theoretical values even at 573 K.",

keywords = "Iridium-carbon cluster films, MOCVD",

author = "T. Goto and Vargas, {J. R.} and T. Hirai",

note = "Funding Information: This research was partially supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture under contract No-s NP0701 and 0645308 1.",

year = "1996",

month = oct,

day = "30",

doi = "10.1016/S0921-5093(96)10296-3",

language = "English",

volume = "217-218",

pages = "223--226",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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TY - JOUR

T1 - Preparation of iridium clusters by MOCVD and their electrochemical properties

AU - Goto, T.

AU - Vargas, J. R.

AU - Hirai, T.

N1 - Funding Information: This research was partially supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture under contract No-s NP0701 and 0645308 1.

PY - 1996/10/30

Y1 - 1996/10/30

N2 - Iridium-carbon (Ir-C) cluster films were prepared by metal organic chemical vapor deposition (MOCVD) using an acetylacetonate precursor. The Ir-C cluster films consist of Ir clusters (1 to 3 nm in diameter) and amorphous carbon layers which surround each Ir cluster. The Ir-C cluster films had excellent electrochemical performance as a reversible electrode for zirconia solid electrolyte particularly at low temperatures. The electrode/electrolyte interface conductivity of the Ir-C cluster films was about 100 times greater than that for other conventional platinum electrodes below 773 K. The emf values of the oxygen cell constructed from the Ir-C cluster film electrodes and zirconia electrolytes showed the Nernstian theoretical values even at 573 K.

AB - Iridium-carbon (Ir-C) cluster films were prepared by metal organic chemical vapor deposition (MOCVD) using an acetylacetonate precursor. The Ir-C cluster films consist of Ir clusters (1 to 3 nm in diameter) and amorphous carbon layers which surround each Ir cluster. The Ir-C cluster films had excellent electrochemical performance as a reversible electrode for zirconia solid electrolyte particularly at low temperatures. The electrode/electrolyte interface conductivity of the Ir-C cluster films was about 100 times greater than that for other conventional platinum electrodes below 773 K. The emf values of the oxygen cell constructed from the Ir-C cluster film electrodes and zirconia electrolytes showed the Nernstian theoretical values even at 573 K.

KW - Iridium-carbon cluster films

KW - MOCVD

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VL - 217-218

SP - 223

EP - 226

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

ER -

Preparation of iridium clusters by MOCVD and their electrochemical properties

Abstract

Keywords

ASJC Scopus subject areas

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