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Electrodeposition of Sb-Te Alloy in AlCl3-NaCl-KCl Molten Salt

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/75204

Title: Electrodeposition of Sb-Te Alloy in AlCl3-NaCl-KCl Molten Salt
Authors: Ueda, Mikito Browse this author →KAKEN DB
Mito, Yusuke Browse this author
Ohtsuka, Toshiaki Browse this author
Keywords: molten salt
thermoelectric device
Sb2Te3
compound semiconductor
electrodeposition
Issue Date: 1-Aug-2008
Publisher: The Thermoelectrics Society of Japan
Journal Title: Materials Transactions
Volume: 49
Issue: 8
Start Page: 1720
End Page: 1722
Publisher DOI: 10.2320/matertrans.E-MRA2008811
Abstract: The Electrodeposition of Sb-Te alloy was carried out in AlCl3-NaCl-KCl molten salt containing SbCl3 and TeCl4 at 423 K by constant potential electrolysis. The voltammogram on a glassy carbon (GC) electrode in a melt containing 1.0×10−2 kmol m−3 SbCl3 and 1.0×10−2 kmol/m3 TeCl4 revealed the cathodic current waves at 1.5, 1.1, and 0.9 V vs. Al/Al(III). A stable Sb-Te alloy deposit was obtained at 0.85 V in the melt containing SbCl3 and TeCl4. At the higher concentration ratio of the Sb(III) to (Sb(III) + Te(IV)), a good linear relation was found between the atomic ratio of Sb in the deposit and the concentration ratio of Sb (III) in the melt. The Sb-Te alloy deposit of atomic ratio of 38:62% which was assume to be suitable for a thermoelectric device was obtained with the molten salt containing 7.0×10−3 kmol/m3 SbCl3 and 1.0×10−2 kmol/m3 TeCl4. The XRD pattern of the deposit corresponds to that of Sb2Te3 intermetallic compound. The deposit had homogeneous disk-like granule with the disk size of about 10 μm.
Type: article
URI: http://hdl.handle.net/2115/75204
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 上田 幹人

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