Factors controlling the electrochemical potential window for diamond electrodes in non-aqueous electrolytes

M. Yoshimura, K. Honda, T. Kondo, R. Uchikado, Y. Einaga, Tata N. Rao, D. A. Tryk, A. Fujishima

研究成果: Article査読

30 被引用数 (Scopus)

抄録

The electrochemical behavior of as-deposited diamond was examined in various non-aqueous solvents and supporting electrolytes. The potential for the onset of anodic current was found to be dependent on the nature of the organic solvent, whereas that for the onset of cathodic current was dependent on the type of supporting salt cation. These results indicate that outer-sphere decomposition reactions of the organic solvents are the most important in determining the oxidation potential limit, and those involving cations are the most important in determining the reduction potential limit. These oxidations and reductions were correlated to the HOMO and LUMO energies of the solvents and the supporting electrolyte cations, respectively. The correlations were found to be linear. Electrical double-layer capacitance values were also found to be dependent on the type of electrolyte, and correlations were observed between the capacitance values and the molecular volumes of the solvent as well as between the capacitance and the volumes of the supporting electrolyte cations. The experimental results clearly indicate that the electrical double-layer capacitance values decrease, whereas the thickness of the Helmholz layer increases with increasing volume of the solvated cations.

本文言語English
ページ(範囲)67-74
ページ数8
ジャーナルDiamond and Related Materials
11
1
DOI
出版ステータスPublished - 2002 1
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
  • 化学 (全般)
  • 機械工学
  • 材料化学
  • 電子工学および電気工学

フィンガープリント

「Factors controlling the electrochemical potential window for diamond electrodes in non-aqueous electrolytes」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル