Limiting Current Enhancement by Self-Induced Redox Cycling on a Micro-Macro Twin Electrode

Tsutomu Horiuchi, Osamu Niwa, Masao Morita, Hisao Tabei

研究成果: Article査読

26 被引用数 (Scopus)

抄録

The current arising from a reversible redox reaction involving soluble species occurring at a microelectrode may be increased by moving a large electrode at open circuit close to the microelectrode. This phenomena is readily explained. The product of the electrochemical reaction at the microelectrode diffuses the short distance to the nearest part of the macroelectrode and alters the concentration of the redox species at this location on the macroelectrode, compared to other locations at the electrode surface. In this situation, the macroelectrode behaves as a shorted concentration cell and attempts to reduce the concentration aberration caused by the reaction occurring at the microelectrode. This is accomplished by producing more of the original reactant for the microelectrode. This, in turn, increases the flux of reactant to the microelectrode and, therefore, also the current at the microelectrode.

本文言語English
ページ(範囲)3549-3553
ページ数5
ジャーナルJournal of the Electrochemical Society
138
12
DOI
出版ステータスPublished - 1991 12
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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