Optimization of Electrolysis Conditions for Ti Film Electrodeposition from LiF– LiCl Eutectic Molten Salt. (8th September 2020)

• Record Type: Journal Article
• Authors: Unoki, Makoto; Norikawa, Yutaro; Yasuda, Kouji; Nohira, Toshiyuki
• Is Part Of: ECS transactions. Volume 98:Number 10(2020)
• Page Start: 393
• Page End: 400
• Publication Date: 2020-09-08
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/09810.0393ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : The optimum conditions for electrodepositing compact, smooth, and adherent Ti films in LiF–LiCl–Li3 TiF6 at 823 K were investigated. The Li3 TiF6 was formed in-situ in the melt via comproportionation reaction between Li2 TiF6 and Ti powder. The solubility of Li3 TiF6 was confirmed to be higher than 7.1 mol% by cyclic voltammetry and ICP-AES measurement. Galvanostatic electrolysis was conducted on Ni plate substrates at various concentrations of Li3 TiF6 (0.55, 2.6, 7.1 mol%) and cathodic current density (50–1200 mA cm −2 ). Ti films with smoother surface were obtained at higher Li3 TiF6 concentration and lower current density. In the present study, Ti films having the smoothest surface were obtained at 7.1 mol% of Li3 TiF6 and 50 mA cm −2 .