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タイトル: A New Electrolytic Production Process of Silicon Using Liquid Zn Alloy Cathode in Molten Salt
著者: Nohira, Toshiyuki  kyouindb  KAKEN_id
Ido, Akifumi
Shimao, Takeyuki
Yang, Xiao
Yasuda, Kouji
Homma, Takayuki
Hagiwara, Rika
著者名の別形: 野平, 俊之
楊, 肖
安田, 幸司
萩原, 理加
発行日: 2016
出版者: The Electrochemical Society
誌名: ECS Transactions
巻: 75
号: 15
開始ページ: 17
終了ページ: 33
抄録: Electrolytic production process for solar-grade Si utilizing liquid Si–Zn alloy cathode in molten CaCl₂ has been proposed. Toward the establishment of the process, the behavior of liquid Zn metal was investigated in molten CaCl₂ at 1123 K. The evaporation of Zn metal was largely suppressed by an immersion into molten salt, which enables the use of Zn electrode in spite of the high vapor pressure of Zn. The cyclic voltammetry suggested the reduction of SiO₂ at 1.45 V vs. Ca²⁺/Ca on a Zn cathode. After the potentiostatic electrolysis at 0.9 V, Si particles with diameters of 2–30 µm were precipitated in the solidified Zn matrix by the slow cooling process of the produced liquid Si–Zn alloy. The alloying rate between solid Si and liquid Zn was measured as 4.56 μm s⁻¹, and it linearly decreased with the Si content in liquid Zn phase.
記述: PRiME 2016/230th ECS Meeting, October 2, 2016 - October 7, 2016, Honolulu, HI.
著作権等: © The Electrochemical Society, Inc. 2016. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in ECS Trans. 2016 volume 75, issue 15, 17-33.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/236052
DOI(出版社版): 10.1149/07515.0017ecst
出現コレクション:学術雑誌掲載論文等

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