| FFC工艺中阴极TiO2的导电性及影响因素分析 |
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| 引用本文： | 李泽全,白晨光,陈小亮,陶长元.FFC工艺中阴极TiO2的导电性及影响因素分析[J].重庆大学学报(自然科学版),2008,31(11):1323-1326. |
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| 作者姓名： | 李泽全 白晨光 陈小亮 陶长元 |
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| 作者单位： | [1]重庆大学化学化工学院,重庆400030 [2]重庆大学材料科学与工程学院,重庆400030 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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| 摘 要： | 针对FFC工艺,通过TiO2烧结及电解实验,研究TiO2电极导电性.采用X射线衍射仪(XRD)对烧结前后的产物和电解产物进行分析.结果表明,高温烧结可以改变TiO2的能带结构,产生导电空位;TiO2电极在熔盐中形成双电层,使氧原子离子化,形成TiO2-x离子结构;熔盐中的离子渗透到TiO2电极内部,增加了电极内的导电离子数.TiO2电极的活化可通过高温烧结产生的导电空位、双电层形成的离子结构及渗透到电极内部的熔盐离子来实现,使FFC工艺中的电解得以顺利进行.
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| 关 键 词： | 导电性 熔盐 二氧化钛 FFC工艺 |
Conductivity of a TiO_2 cathode in the FFC process and analysis of its influencing factors |
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| LI Ze-quana,b,BAI Chen-guangb,CHEN Xiao-lianga,TAO Chang-yuana.Conductivity of a TiO_2 cathode in the FFC process and analysis of its influencing factors[J].Journal of Chongqing University(Natural Science Edition),2008,31(11):1323-1326. |
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| Authors: | LI Ze-quana b BAI Chen-guangb CHEN Xiao-lianga TAO Chang-yuana |
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| Institution: | LI Ze-quan~a,b,BAI Chen-guang~b,CHEN Xiao-liang~a,TAO Chang-yuan~a(a.College of Chemistry , Chemical Engineering,b.College of Material Science , Engineering,Chongqing University,Chongqing 400030,P.R.China) |
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| Abstract: | The conductivity of a TiO2 cathode in the FFC process was studied by sintering and electrolyzing experiments.Sintered TiO2 cathode and electrochemical reduction of TiO2 were measured using X-ray diffraction.Results show that changing the energy band structure of TiO2 via high-temperature sintering can cause electric conduction vacancy.An electric double layer can be formed in molten salt.Ionization of oxygen atoms leads to formation of TiO2-x ionic structures.The ions infiltrate to the electrode in molten s... |
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| Keywords: | conductivity molten salt titanium dioxide FFC process |
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