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Bifunctional redox flow battery-1 V(III)/V(II)-glyoxal(O-2) system
Wen, Y. H.1; Cheng, J.1,2; Ma, P. H.3; Yang, Y. S.1,2
关键词Bifunctional Redox Flow Battery Organic Electro-synthesis Glyoxal v(IIi)/v(Ii) Separator
刊名ELECTROCHIMICA ACTA
2008-03-20
DOI10.1016/j.electacta.2007.11.073
53期:9页:3514-3522
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Electrochemistry
研究领域[WOS]Electrochemistry
关键词[WOS]PHOTOVOLTAIC SYSTEMS ; EXCHANGE MEMBRANES ; ENERGY ANALYSIS ; TRANSPORT
英文摘要Bifunctional redox flow batteries (BRFB) possess functions of both electricity storage and electrochemical preparation, having the potential for increasing the electrical energy utilization. A V(III)/V(II)-glyoxal(O-2) system has been developed. Separators of the BRFB play a key role in BRFB performance. A Nation solution was sprayed on a gas diffusion layer (GDL) at the Nafion loading of 2 mg cm(-2), and the GDL was then hot-pressed onto a Nafion 115 cation exchange membrane, obtaining a modified separator. This separator not only prevents the crossover of vanadium but also has favorable conductivity, obtaining optimal charge and organic electro-synthesis performance of the BRFB. The effects of the concentrations of glyoxal and HCl on the performance of BRFB were also investigated. It is shown that the optimal concentration of glyoxal and HCl should be 1.2 and 3 M, respectively. As a result, the current efficiency of organic electro-synthesis is further increased. An acceptable discharge performance is achieved for a period exceeding 20 h at the current density of 20 mA cm(-2). The average discharge voltage of 0.73 V and the coulombic efficiency of 66% are obtained. It is demonstrated that the principle of the BRFB is feasible. However, further experiments are needed to improve the performance. (c) 2007 Elsevier Ltd. All rights reserved.
语种英语
WOS记录号WOS:000254375600010
引用统计
被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140941
专题中国科学院大连化学物理研究所
作者单位1.Res Inst Chem Def, Beijing 100083, Peoples R China
2.Beijing Univ Sci & Technol, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Full Cell R&D Ctr, Dalian 116023, Peoples R China
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GB/T 7714
Wen, Y. H.,Cheng, J.,Ma, P. H.,et al. Bifunctional redox flow battery-1 V(III)/V(II)-glyoxal(O-2) system[J]. ELECTROCHIMICA ACTA,2008,53(9):3514-3522.
APA Wen, Y. H.,Cheng, J.,Ma, P. H.,&Yang, Y. S..(2008).Bifunctional redox flow battery-1 V(III)/V(II)-glyoxal(O-2) system.ELECTROCHIMICA ACTA,53(9),3514-3522.
MLA Wen, Y. H.,et al."Bifunctional redox flow battery-1 V(III)/V(II)-glyoxal(O-2) system".ELECTROCHIMICA ACTA 53.9(2008):3514-3522.
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