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学科主题: 物理化学
题名: Simulation of the self-discharge process in vanadium redox flow battery
作者: You, Dongjiang1;  Zhang, Huamin1;  Sun, Chenxi2;  Ma, Xiangkun1
通讯作者: 张华民
关键词: Self-discharge ;  Mathematical model ;  Vanadium redox flow battery
刊名: JOURNAL OF POWER SOURCES
发表日期: 2011-02-01
DOI: 10.1016/j.jpowsour.2010.08.036
卷: 196, 期:3, 页:1578-1585
收录类别: SCI
文章类型: Article
部门归属: DNL17
项目归属: DNL17
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
摘要: Simulation of the self-discharge process in vanadium redox flow battery
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: A simple mathematical model is established to predict the self-discharge process in a kilowatt-class vanadium redox flow battery stack. The model use basic mass transport theory to simulate the transfer of vanadium ions in the battery. The simulation results agree reasonably with the experimental values, confirming the validity of the model. It is found that the diffusion rate of vanadium ions depends on the diffusion coefficient, the partition coefficient and the concentration gradient of the vanadium ions between the two half cells. For the self-discharge process at the initial SOC of 0, the net transfer direction of vanadium ions is towards the negative electrolyte until the diffusion flux of V(3+) becomes larger than that of VO(2+.) For the self-discharge process at the initial SOC of 65%, the net transfer direction of vanadium ions is towards the positive electrolyte at the initial 20h and then turns to the negative electrolyte. There are two obvious changes in the diffusion flux of vanadium ions at about 33h and 43h, corresponding to the vanishing time of VO(2)(+) and V(2+) respectively. (C) 2010 Elsevier B.V. All right reserved.
语种: 英语
WOS记录号: WOS:000284790200101
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115694
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab PEMFC Key Mat & Technol, Dalian 116023, Peoples R China
2.Dalian RONGKEPOWER Co Ltd, Dalian 116025, Peoples R China

Recommended Citation:
You, Dongjiang,Zhang, Huamin,Sun, Chenxi,et al. Simulation of the self-discharge process in vanadium redox flow battery[J]. JOURNAL OF POWER SOURCES,2011,196(3):1578-1585.
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