Electrochemical Behavior of Hydride Ion in a LiF-NaF-KF Eutectic Melt

• QIAO Huan

  Department of Fundamental Energy Science, Graduate School of Energy Science, Kyoto University

• NOHIRA Toshiyuki

  Department of Fundamental Energy Science, Graduate School of Energy Science, Kyoto University

• ITO Yasuhiko

  Department of Fundamental Energy Science, Graduate School of Energy Science, Kyoto University

Abstract

The electrochemical behavior of hydride ion on a nickel electrode in a LiF-NaF-KF eutectic melt at 773 K has been studied by means of gas chromatography, cyclic voltammetry, chronopotentiometry and chronoamperometry. It was found that hydride ion is anodically oxidized at around 0.45 V vs. M⁺/M (M = alkali metal) and pure hydrogen gas is generated according to the following reaction: H⁻ → l/2 H₂ + e⁻ This anodic process is a reversible, one-electron reaction governed by diffusion transport. The diffusion coefficient of hydride ion, <img align="middle" src="./Graphics/abst-67_643.png"/>, was estimated to be around 1 × 10⁻⁵ cm² s⁻¹ at 773 K.

Journal

• Electrochemistry

  Electrochemistry 67 (6), 643-648, 1999-06-05

  The Electrochemical Society of Japan

Keywords

• Hydride Ion
• LiF-NaF-KF Eutectic Melt
• Electrochemical Behavior
• Diffusion Coefficient

Details

• CRID: 1390001277393217152
• NII Article ID: 10002567633
• NII Book ID: AN00151637
• DOI: 10.5796/electrochemistry.67.643
• ISSN: 21862451
• ISSN: 13443542
• NDL BIB ID: 4743876
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4743876
• Web Site: https://www.jstage.jst.go.jp/article/electrochemistry/67/6/67_643/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Allowed