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题名: Carbon paper coated with supported tungsten trioxide as novel electrode for all-vanadium flow battery
作者: Yao, Chuan1, 2;  Zhang, Huamin1;  Liu, Tao1;  Li, Xianfeng1;  Liu, Zonghao3
关键词: Vanadium redox flow battery ;  Tungsten trioxide/super activated carbon ;  Carbon paper ;  Electrochemical performance ;  Voltage efficiency
刊名: JOURNAL OF POWER SOURCES
发表日期: 2012-11-15
DOI: 10.1016/j.jpowsour.2012.06.072
卷: 218, 页:455-461
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: A novel carbon paper electrode coated with supported tungsten trioxide is developed to improve the carbon fiber's electrochemical performance toward the vanadium redox couples. Super activated carbon supported tungsten trioxide (WO3/SAC) is prepared via an impregnation method and characterized by X-ray diffraction and scanning electron microscopy. The electrochemical performance of the prepared electrode is evaluated with cyclic voltammetry and electrochemical impedance spectroscopy. Results show that WO3/SAC exhibits excellent electro-catalytic activity and kinetic reversibility toward the vanadium redox couples. By adding the WO3/SAC, the charge transfer resistances for both the positive and the negative reactions are significantly reduced. Using as prepared electrodes, the columbic efficiency (CE), voltage efficiency (VE) and energy efficiency (EE) of the vanadium redox flow battery at 50 mA cm(-2) are 94.5%, 85.2% and 80.5%, respectively, which are much higher than that of the cell assembled with pristine carbon paper electrodes. (C) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: CHEMICAL MODIFICATION ;  POSITIVE ELECTRODE ;  REDOX REACTIONS ;  GRAPHITE FELT ;  PERFORMANCE ;  SYSTEMS ;  CELL
语种: 英语
WOS记录号: WOS:000309038100062
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143051
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, Div Energy Storage, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Dalian Rongke Power Co Ltd, Dalian 116025, Peoples R China

Recommended Citation:
Yao, Chuan,Zhang, Huamin,Liu, Tao,et al. Carbon paper coated with supported tungsten trioxide as novel electrode for all-vanadium flow battery[J]. JOURNAL OF POWER SOURCES,2012,218:455-461.
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