Electrochemical Behavior of Iridium-Electroplated Titanium Electrode.

• SATO Yuichi

  Dept. of Eng., Kanagawa Univ.

• HONDA Satoshi

  Dept. of Eng., Kanagawa Univ.

• ONABUTA Chiho

  Dept. of Eng., Kanagawa Univ.

• KOBAYAKAWA Koichi

  Dept. of Eng., Kanagawa Univ.

• HASHIMOTO Ichiro

  Tanaka Kikinzoku Kogyo Co.

• USHIKU Eisaku

  Tanaka Kikinzoku Kogyo Co.

Bibliographic Information

Other Title

• イリジウムめっきチタン電極の電気化学的挙動
• イリジウム メッキ チタン デンキョク ノ デンキ カガクテキ キョドウ

Abstract

Iridium-oxide-coated titanium electrodes used for oxygen and chlorine evolution are usually prepared using a complicated thermal decomposition process. To simplify preparation iridium was plated on to a titanium substrate and the plated iridium oxidized by electrolysis or heating. The electrode's electrochemical behavior after electrolysis or heating to oxidize iridium was studied in H₂SO₄ and NaCl solutions. When the electrode was electrolyzed in NaCl solution for 500 cycles using a rectangular wave of ±75mA/cm², the overpotential for oxygen or chlorine evolution was marked reduced, due perhaps to two reasons for this. One involves the formation of iridium hydroxide by electrolysis, which indicates catalytic activity. The other involves cracks formed on the electrode surface by electrolysis, which increases the electrode surface and decreases the real current density and overpotential.

Journal

• Journal of The Surface Finishing Society of Japan

  Journal of The Surface Finishing Society of Japan 49 (1), 68-72, 1998

  The Surface Finishing Society of Japan

Keywords

• Iridium
• Electroplating
• Overpotential

Details

• CRID: 1390001204114462464
• NII Article ID: 10002108511
• NII Book ID: AN1005202X
• DOI: 10.4139/sfj.49.68
• ISSN: 18843409
• ISSN: 09151869
• NDL BIB ID: 4367226
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4367226
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed