| 全钒液流电池正极和负极材料的处理方法 |
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| 引用本文： | 王文红,王新东,郭敏,李建玲.全钒液流电池正极和负极材料的处理方法[J].北京科技大学学报,2007,29(11):1141-1144. |
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| 作者姓名： | 王文红 王新东 郭敏 李建玲 |
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| 作者单位： | 北京科技大学冶金与生态工程学院,北京,100083 |
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| 摘 要： | 为了获得大反应电流,全钒氧化还原液流电池使用聚丙烯腈基碳毡为电极活性材料.在空气中热处理碳毡可以增加其表面含氧官能团浓度,改善碳毡的亲水性,降低反应过电位.实验表明:电池的过电位主要由正极反应造成;热处理正极碳毡可以大大降低电池极化内阻,负极碳毡热处理后降低了析氢过电位,从而降低了电池的电流效率;正极使用热处理后的碳毡,负极使用未经处理的原毡,可以获得更好的电池能量效率.
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| 关 键 词： | 全钒氧化还原液流电池 聚丙烯腈基碳毡 过电位 电池内阻 全钒氧化还原液流电池 电池正极 负极材料 处理方法 redox flow battery electrode materials negative positive 能量效率 电流效率 析氢过电位 极化内阻 实验 亲水性 改善 浓度 表面含氧官能团 热处理 空气 电极活性材料 |
| 收稿时间： | 2006-06-11 |
| 修稿时间： | 2006-09-28 |
Different treatments for positive and negative electrode materials of an all-vanadium redox flow battery |
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| WANG Wenhong,WANG Xindong,GUO Min,LI Jianling.Different treatments for positive and negative electrode materials of an all-vanadium redox flow battery[J].Journal of University of Science and Technology Beijing,2007,29(11):1141-1144. |
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| Authors: | WANG Wenhong WANG Xindong GUO Min LI Jianling |
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| Abstract: | An all-vanadium redox-flow battery (VRB) typically uses carbon felt as the electrode material in order to enhance the reactive current. The carbon felt made by polyacrylonitrile-based polymers can be heat-treated to increase the number of surface oxide sites and to improve its crystallinity and conductivity. It was examined in VRB that the over potentiality was mainly caused by positive pole reactions. The heat treatment of positive felt could decrease the cell's resistance dramatically, but that of negative felt induced low hydrogen evolution over potentiality and low current efficiency. With raw felt as the negative pole material and heat-treated felt as the positive pole material the test cell could get the optimal energy efficiency. |
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| Keywords: | all-vanadium redox flow battery PAN based carbon felt over potentiality cell resistance |
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