| 协同场作用下钒离子在质子交换膜中的传质过程 |
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| 引用本文： | 张友,王树博,齐亮,姚克俭.协同场作用下钒离子在质子交换膜中的传质过程[J].化工学报,2015,66(Z1):81-88. |
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| 作者姓名： | 张友 王树博 齐亮 姚克俭 |
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| 作者单位： | 1.浙江工业大学化工学院绿色化学合成技术国家重点实验室培育基地, 浙江 杭州 310032;2.清华大学核能与新能源技术研究院, 北京 100084 |
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| 基金项目： | 国家青年科学基金项目，国家高技术研究发展计划项目(2012AA051201).supported by the National Natural Science Foundation for the Youth，the National High Technology Research and DevelopmentProgram of China |
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| 摘 要： | 研究了VO2+在Nafion117质子交换膜中的传质过程,重点考察了不同操作工况下浓度场和电场的协同作用。定量了电场对钒离子透膜传质过程的影响大小,并根据实验数据拟合出了VO2+在Nafion117膜中的表观电迁移率。结果表明:电场对高浓度电解液的离子透膜过程影响较大,升高温度和增加电解液对流均强化了电场作用在钒离子透膜传质的影响,加入的正向电场越强,跨膜渗透越剧烈,且电场因子随着时间的增加而增加。反向电场有利于缓解钒离子透膜传递过程。
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| 关 键 词： | 全钒液流电池 扩散 溶液 传递过程 电解质 膜渗透 |
| 收稿时间： | 2015-03-19 |
| 修稿时间： | 2015-03-26 |
Field synergy effects on mass transfer process of vanadium ion in proton exchange membrane |
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| ZHANG You,WANG Shubo,QI Liang,YAO Kejian.Field synergy effects on mass transfer process of vanadium ion in proton exchange membrane[J].Journal of Chemical Industry and Engineering(China),2015,66(Z1):81-88. |
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| Authors: | ZHANG You WANG Shubo QI Liang YAO Kejian |
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| Affiliation: | 1.State Key Laboratory Breed Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, China;2.Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China |
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| Abstract: | The mass transfer process of VO2+ in Nafion117 was studied, this work focused on the synergistic effect of concentration field and electric field in different operating conditions. Influence of electric field on the mass transfer process across membrane of VO2+ is oberserved, and the apparent electric mobility of VO2+ in Nafion117 was estimated based on experimental data. The results show that, the force of electric field on the VO2+ mass transfer process across membrane in high concentration condition is more obvious than that in low concentration condition. Increasing temperature as well as electrolyte convection can strengthen electric field effect on membrane crossing process of VO2+. The mass transfer process in membrane of VO2+ is accelerated by increasing additional positive electric field force, and the electric factor increases with time. Negative electric field can help alleviate the phenomenon of mass transfer process across membrane of VO2+. |
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| Keywords: | vanadium flow battery diffusion solution transport processes electrolytes membrane permeation |
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