Electrodeposition of Co-Sb thermoelectric film from ethylene glycol-CoCl₂-SbCl₃ solution

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• 作者：H. Yamamoto ; ^{hyama@eng.u-hyogo.ac.jp} ; M. Morishita ; Y. Mizuta ; A. Masubuchi
• 关键词：Electrodeposition ; Non-aqueous solution ; Cobalt&ndash ; antimony alloy ; Thermoelectric material
• 刊名：Surface and Coatings Technology
• 出版年：2012
• 期刊代码：106_02578972
• 类别：ms
• 出版时间：25 March, 2012
• 卷：206
• 期：15
• 页码：3415-3420
• 文件大小：1185 K

摘要

The electrodeposition of cobalt-antimony thermoelectric semiconductor films was investigated in a non-aqueous solution of ethylene glycol (EG)-CoCl₂-SbCl₃ at 393 K. By controlling the bath composition and cathodic current density, Co-Sb alloys containing 0-94 mol%of Co were obtained at 50-300 Am^鈭?#xA0;2. The resistance polarization caused by the formation of semiconductor film was observed in the polarization curve measured in the EG-CoCl₂-SbCl₃ (90.0-9.3-0.7 mol%) bath. In this bath, the Co-Sb (23.6-76.4 mol%) alloy was obtained by maintaining the constant potential electrolysis at 0.1 V. This alloy included CoSb₃ and exhibited a p-type thermoelectric conversion by the given temperature difference.