The Effect of Temperature on the Electrochemical Behavior of the V(IV)/V(V) Couple on a Graphite Electrode
文献类型：期刊论文
| 作者 | H. J. Liu ; Q. Xu ; C. W. Yan ; Y. Z. Cao ; Y. L. Qiao |
| 刊名 | International Journal of Electrochemical Science
 |
| 出版日期 | 2011 |
| 卷号 | 6期号:8页码:3483-3496 |
| 关键词 | Vanadium redox flow battery graphite electrode impedance kinetic parameter activation energy redox flow battery positive half-cell carbon electrodes impedance mechanism state |
| ISSN号 | 1452-3981 |
| 中文摘要 | The electrochemical behavior of the V(IV)/V(V) couple in an aqueous solution of 2 mol dm(-3) H(2)SO(4)+2 mol dm(-3) VOSO(4) on a graphite electrode at different temperatures is studied by steady-state polarization and electrochemical impedance spectroscopy. The results show that the diffusion coefficient (D) of V(IV) species increases from 1.60x10(-5) to 3.15x10(-5) cm(2) s(-1) with temperature from 15 to 70 degrees C and the activation energy for diffusion of V(IV) species is 10.52 kJ mol(-1). The anodic oxidation of V(IV) is a mixed kinetic-diffusion controlled process at the anodic polarization ranged from 32 to 132 mV vs. open circuit potential (OCP). The rate constant of charge transfer for the anodic oxidation of V(IV) increases from 1.2x10(-5) to 17.7x10(-5) cm s(-1) with temperature varied from 20 to 60 degrees C, and its activation energy is 52.4 kJ mol(-1). |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30524]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | H. J. Liu,Q. Xu,C. W. Yan,et al. The Effect of Temperature on the Electrochemical Behavior of the V(IV)/V(V) Couple on a Graphite Electrode[J]. International Journal of Electrochemical Science,2011,6(8):3483-3496. |
| APA | H. J. Liu,Q. Xu,C. W. Yan,Y. Z. Cao,&Y. L. Qiao.(2011).The Effect of Temperature on the Electrochemical Behavior of the V(IV)/V(V) Couple on a Graphite Electrode.International Journal of Electrochemical Science,6(8),3483-3496. |
| MLA | H. J. Liu,et al."The Effect of Temperature on the Electrochemical Behavior of the V(IV)/V(V) Couple on a Graphite Electrode".International Journal of Electrochemical Science 6.8(2011):3483-3496. |
入库方式： OAI收割
来源：金属研究所
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