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题名: A non-aqueous all-copper redox flow battery with highly soluble active species
作者: Li, Yun1;  Sniekers, Jeroen2;  Malaquias, Joao3;  Li, Xianfeng4;  Schaltin, Stijn3;  Stappers, Linda3;  Binnemans, Koen2;  Fransaer, Jan3;  Vankelecom, Ivo F. J.1
关键词: Energy storage ;  Redox flow battery ;  Copper ;  Ionic liquids ;  Liquid metal salts
刊名: ELECTROCHIMICA ACTA
发表日期: 2017-05-10
DOI: 10.1016/j.electacta.2017.03.039
卷: 236, 页:116-121
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
英文摘要: A metal-based redox pair with acetonitrile as ligand [Cu(MeCN)(4)][ Tf2N] is described for use in non-aqueous redox flow battery (RFB). The electrode kinetics of the anode and cathode are studied using cyclic voltammetry. The Cu2+/Cu+ and Cu+/Cu couples in this system yield a cell potential of 1.24V. The diffusion coefficient for [ Cu(MeCN)(4)][Tf2N] in acetonitrile is estimated to be 6.8 x 10(-6) cm(2) s(-1) at room temperature. The copper-acetonitrile complex has a very high solubility of 1.68M in acetonitrile, the most widely used organic solvent for non-aqueous electrochemical applications. Hence, a maximum theoretical energy density around 28 Wh L-1 can be reached with the reported system. The RFB with this electrolyte shows a promising performance, with coulombic efficiencies of 87% and energy efficiencies of 44% (5 mA cm(-2)). (C) 2017 Elsevier Ltd. All rights reserved.
关键词[WOS]: DEEP EUTECTIC SOLVENTS ;  RESEARCH-AND-DEVELOPMENT ;  ENERGY-STORAGE ;  IONIC LIQUIDS ;  SUPPORTING ELECTROLYTES ;  MEMBRANES ;  PROGRESS ;  ELECTRODEPOSITION ;  CHALLENGES ;  PROSPECTS
语种: 英语
WOS记录号: WOS:000401110200013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152290
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.Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, Celestijnenlaan 200E,POB 2461, B-3001 Heverlee, Belgium
2.Katholieke Univ Leuven, Dept Chem, Celestijnenlaan 200F,POB 2404, B-3001 Heverlee, Belgium
3.Katholieke Univ Leuven, Dept Mat Engn, Kasteelpk Arenberg 44,POB 2450, B-3001 Heverlee, Belgium
4.Chinese Acad Sci, Div Energy Storage, Dalian Inst Chem Phys, Zhongshan Rd 457, Dalian 116023, Peoples R China

Recommended Citation:
Li, Yun,Sniekers, Jeroen,Malaquias, Joao,et al. A non-aqueous all-copper redox flow battery with highly soluble active species[J]. ELECTROCHIMICA ACTA,2017,236:116-121.
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