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Title: Electrochemical Formation of Ca-Si in Molten CaCl2-KCl
Authors: Sakanaka, Yoshihide
Goto, Takuya
Hachiya, Kan  kyouindb  KAKEN_id
Author's alias: 蜂谷, 寛
Keywords: Renewable Energy, Sustainability and the Environment
Materials Chemistry
Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films
Condensed Matter Physics
Issue Date: 2015
Publisher: The Electrochemical Society
Journal title: Journal of The Electrochemical Society
Volume: 162
Issue: 4
Start page: D186
End page: D191
Abstract: Electrochemical formation of a Ca-Si film in a molten CaCl2-KCl at 923 K was investigated. Potentiostatic electrolysis of a Si electrode at −0.10 V for 1 h resulted in the formation of a multiphase Ca-Si film having a thickness of about 30 μm. The Ca-Si film was converted into other alloy phases by anodic potentiostatic electrolysis after the cathodic electrodeposition of Ca metal at −0.10 V. The various transformation reactions and the corresponding equilibrium potentials were clarified. At 923 K, the equilibrium potential was found to be 0.18 V (CaSi2). Reflectance measurements in the ultraviolet, visible, and near-infrared region clarified that the CaSi2 film has a direct bandgap of 3.1 eV.
Rights: © The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY,, which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
DOI(Published Version): 10.1149/2.1021504jes
Appears in Collections:Journal Articles

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