| 钽在硫酸氢根离子无水乙醇溶液中的电化学行为 |
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| 引用本文： | 杨海平,杨声海,蔡亚楠,侯国锋,夏娇云,唐谟堂. 钽在硫酸氢根离子无水乙醇溶液中的电化学行为[J]. 中国有色金属学会会刊, 2011, 21(1): 179-184 |
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| 作者姓名： | 杨海平 杨声海 蔡亚楠 侯国锋 夏娇云 唐谟堂 |
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| 作者单位： | 杨海平,杨声海,侯国锋,夏娇云,唐谟堂,YANG Hai-ping,YANG Sheng-hai,HOU Guo-feng,XIA Jiao-yun,TANG Mo-tang(中南大学,冶金科学与工程学院,长沙,410083);蔡亚楠,CAI Ya-nan(中南大学,资源加工与生物工程学院,长沙,410083) |
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| 基金项目： | Project(2007AA03Z425)supported by the Hi-tech Research and Development Program of China; Project(50404011)supported by the National Natural Science Foundation of China |
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| 摘 要： | 采用动电位极化、循环伏安、电流暂态和阻抗等技术研究钽在四丁基硫酸氢铵（TBAHS）乙醇溶液中的电化学行为。研究结果表明：循环伏安曲线中没有活化-钝化转变,阳极电流密度随溶液温度、TBAHS浓度、电位扫描速率和水含量增加而增加;表观活化能为43.389kJ/mol,溶解过程为扩散控制。恒电位测试结果表明,当电位较低时,电流密度逐渐降至一稳定值;当电位高于某一值时,电流密度最初下降至一最小值然后逐渐增加。钝化膜电阻随电位升高而减小,当电位高于2.0V时,出现感抗弧。
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| 关 键 词： | 无水乙醇 电化学阻抗谱 极化曲线 钽 四丁基硫酸氢铵 |
Electrochemical behaviors of tantalum in anhydrous ethanol containing hydrogen sulfate ions |
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| YANG Hai-ping,YANG Sheng-hai,CAI Ya-nan,HOU Guo-feng,XIA Jiao-yun,TANG Mo-tang. Electrochemical behaviors of tantalum in anhydrous ethanol containing hydrogen sulfate ions[J]. Transactions of Nonferrous Metals Society of China, 2011, 21(1): 179-184 |
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| Authors: | YANG Hai-ping YANG Sheng-hai CAI Ya-nan HOU Guo-feng XIA Jiao-yun TANG Mo-tang |
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| Affiliation: | YANG Hai-ping1,YANG Sheng-hai1,CAI Ya-nan2,HOU Guo-feng1,XIA Jiao-yun1,TANG Mo-tang1 1.School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China,2.School of Minerals Processing and Bioengineering |
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| Abstract: | The electrochemical behaviors of Ta in tetrabutylammonium hydrogen sulfate(TBAHS) ethanol solutions were studied using potentiodynamic polarization,cyclic voltammetry,potentiostatic current time transient and impedance techniques.The results revealed that no active-passive transition is presented in the cyclic voltammogram,and the anodic current density increases with the increase of solution temperature,TBAHS concentration,potential scan rate and water content.The apparent activation energy is about 43.389... |
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| Keywords: | anhydrous ethanol electrochemical impedance spectra polarization curve tantalum tetrabutylammonium hydrogen sulfate |
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