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博士生尹华意的论文在ELECTROCHIMICA ACTA刊出
发布时间:2013-09-09 10:54:56     发布者:yz     浏览次数:

标题:Template-free electrosynthesis of crystalline germanium nanowires from solid germanium oxide in molten CaCl2-NaCl作者:Yin, Huayi; Xiao, Wei; Mao, Xuhui; Wei, Weifeng; Zhu, Hua; Wang, Dihua

来源出版物:ELECTROCHIMICA ACTA 卷:102 期: 页:369-374 DOI:10.1016/j.electacta.2013.04.026 出版年:JUL 15 2013

摘要:Germanium nano-materials are attractive due to their potential application prospects in electronic, information and energy industry. Herein we report a one-step preparation of crystalline germanium nanowires (Ge-NWs) by direct electrochemical reduction of solid GeO2 in molten CaCl2-NaCl at 600 degrees C with a current efficiency of similar to 86% and an energy consumptions as low as 3.26 kW h (kg Ge)(-1). The cyclic voltammogram of the GeO2-filled cavity electrode shows that the onset electroreduction potential of GeO2 is -1.0 V vs. Ag/Ag+, much more positive than the reduction potential of cations in the melt. The as-prepared Ge-NWs are of high aspect ratio, high purity and good crystallinity according to the XRD, EDX, SEM and TEM characterizations. The present approach provides a simple and short process for the production of Ge-NWs from a cost-affordable germanium precursor (GeO2). The potential applications of the obtained Ge for photodetector and infrared optical window have been also investigated by Raman and FT-IR measurements.

入藏号:WOS:000321481300046

文献类型:Article

语种:English

作者关键词:Electrosynthesis, Ge nanowires, Molten salt electrochemistry, Solid-state electrochemistry

扩展关键词:DIRECT ELECTROLYTIC REDUCTION; FIELD-EFFECT TRANSISTORS; ELECTROCHEMICAL REDUCTION; 3-PHASE INTERLINES; CALCIUM-CHLORIDE; SILICON NANOWIRES; TUNGSTEN POWDER; SIO2 PELLETS; GROWTH; DIOXIDE

通讯作者地址:汪的华(Wang, Dihua);Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

电子邮件地址:wangdh@whu.edu.cn

地址:

[Yin, Huayi; Xiao, Wei; Mao, Xuhui; Zhu, Hua; Wang, Dihua] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

[Wei, Weifeng] Cent S Univ, Powder Met Res Inst, Changsha 410083, Hunan, Peoples R China.

[Wang, Dihua] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China.

研究方向:Electrochemistry

ISSN:0013-4686

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