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タイトル: Electrochemical behavior of Ti(III) ions in a KF–KCl eutectic melt
著者: Norikawa, Yutaro
Yasuda, Kouji
Nohira, Toshiyuki
著者名の別形: 法川, 勇太郎
安田, 幸司
野平, 俊之
キーワード: Titanium
Molten Salt
Electrodeposition
KF–KCl
発行日: 5-Apr-2018
出版者: Electrochemical Society of Japan
誌名: Electrochemistry
巻: 86
号: 2
開始ページ: 99
終了ページ: 103
抄録: The electrochemical behavior of Ti(III) ions in a eutectic KF–KCl molten salt was investigated using cyclic voltammetry, square wave voltammetry, and chronoamperometry at 923 K. Ti(III) ions were produced by the addition of 0.50 mol% of K₂TiF₆ and 0.33 mol% of Ti sponge to the melt. The reduction of Ti(III) ions to metallic Ti was observed as a single 3-electron wave around 0.33 V vs. K⁺/K in the square-wave voltammogram. The electrodeposition was conducted at a Mo electrode by galvanostatic electrolysis at −50 mA cm⁻² for 20 min. The deposits were confirmed to be compact and adherent Ti metal films by scanning electron microscopy, energy dispersive X-ray analysis and X-ray diffraction analysis. The oxidation of Ti(III) to Ti(IV) was observed at 1.82 V vs. K⁺/K as a reversible electrochemical process. The diffusion coefficient of Ti(III) ions was determined to be 3.9 × 10⁻⁵ cm²s⁻¹.
著作権等: © 2018 The Electrochemical Society of Japan
This is an open access article.
Publisher permitted to deposit the published version of this article on this repository.
URI: http://hdl.handle.net/2433/234952
DOI(出版社版): 10.5796/electrochemistry.17-00082
出現コレクション:学術雑誌掲載論文等

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