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氯化钽在离子液体1-丁基-3-甲基咪唑六氟磷酸盐中电化学行为

颉芳霞 ,  何雪明 ,  吕彦明 ,  俞经虎 ,  武美萍

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引用本文: 颉芳霞, 何雪明, 吕彦明, 俞经虎, 武美萍. 氯化钽在离子液体1-丁基-3-甲基咪唑六氟磷酸盐中电化学行为[J]. 应用化学, 2016, 33(9): 1093-1098. doi: 10.11944/j.issn.1000-0518.2016.09.150408 shu
Citation:  XIE Fangxia, HE Xueming, LYU Yanming, YU Jinghu, WU Meiping. Electrochemical Behavior of Tantalum Pentachloride in 1-Butyl-3-methylimidazolium Hexafluorophosphate Ionic Liquid[J]. Chinese Journal of Applied Chemistry, 2016, 33(9): 1093-1098. doi: 10.11944/j.issn.1000-0518.2016.09.150408 shu

氯化钽在离子液体1-丁基-3-甲基咪唑六氟磷酸盐中电化学行为

  • 1.

    江南大学机械工程学院, 江苏省食品先进制造装备技术重点实验室 江苏 无锡 214122

    • 通讯作者: 颉芳霞,副教授;Tel:0510-85910562;Fax:0510-85910531;E-mail:xiefangxia@aliyun.com;研究方向:电化学和生物材料
  • 基金项目:

    国家自然科学基金（51501073，51375209）；江苏省自然科学基金（BK20140162）；中央高校基本科研业务费专项资金（JUSRP11455，JUSRP51511）资助项目 

摘要: 采用循环伏安法，研究了0.25 mol/L TaCl5在离子液体1-丁基-3-甲基咪唑六氟磷酸盐（[Bmim]PF6）中的电化学行为。实验结果表明，电沉积钽是受扩散控制、两步骤的不可逆电极反应过程，首先是Ta（Ⅴ）还原为Ta（Ⅲ），其次是Ta（Ⅲ）还原为金属钽和形成其它低价钽氯化物。Ta（Ⅴ）/Ta（Ⅲ）和Ta（Ⅲ）/Ta在离子液体[Bmim]PF6中的阴极传递系数分别为0.155和0.406。Ta（Ⅴ）在离子液体[Bmim]PF6中的扩散系数为1.629×10-9 cm2/s。在100℃和-1.25 V条件下，采用恒电势法在铂片上电沉积钽，扫描电子显微镜照片和EDS分析表明，沉积物为钽和钽的低价氯化物。

English

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  • 收稿日期:  2015-11-23
  • 网络出版日期:  2016-02-18
通讯作者: 陈斌, bchen63@163.com
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