Electrochemical properties of amorphous carbon/nano-granular iridium films prepared by MOCVD

Takashi Goto, Takashi Ono, Toshio Hirai

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Ir films were prepared by metal organic chemical vapor deposition (MOCVD), and their electrochemical properties as the electrode for oxygen gas sensors were investigated. The Ir films consisted of Ir granules (1 to 3 nm in diameter) and amorphous carbon surrounding each Ir granules. The charge transfer at the nano-granular Ir film electrode/zirconia solid electrolyte/gas interface was about 100 times greater than that for other platinum electrodes below 500 °C. The emf values of the oxygen cell constructed from the nano-granular Ir film electrode and zirconia solid electrolyte showed the Nernstian theoretical values even at 300 °C.

Original languageEnglish
Pages (from-to)386-390
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume47
Issue number4
DOIs
Publication statusPublished - 2000 Apr

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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