A dopamine-based high redox potential catholyte for aqueous organic redox flow battery

doi:10.1016/j.jpowsour.2020.228124

IMR OpenIR

	A dopamine-based high redox potential catholyte for aqueous organic redox flow battery
	Liu, Quanbing 1,2; Li, Xiangrong 1; Yan, Chuanwei 1,2; Tang, Ao 1,2
通讯作者	Li, Xiangrong(xrli@imr.ac.cn) ; Tang, Ao(a.tang@imr.ac.cn)
	2020-06-01
发表期刊	JOURNAL OF POWER SOURCES
ISSN	0378-7753
卷号	460 页码:9
摘要	Organic redox flow batteries with many technological advantages over conventional metal-based flow batteries represent a new generation flow battery technology for electric grid storage applications. Herein, we report a dopamine-based catholyte with a high redox potential of 0.77 V for aqueous organic redox flow batteries. In sulfuric acid, the dopamine exhibits an excellent combination of good electrochemical reversibility and high solubility up to 0.7 M, and undergoes a fast two-electron transfer redox reaction with a rate constant of 1.82 x 10(-3) cm s(-1). Paired with V3+/V2+, the dopamine-vanadium full cell delivers an average round-trip efficiency of 65% at 20 mA cm(-2) and achieves a capacity retention of 50% for 100 consecutive charge-discharge cycles. Moreover, an energy efficiency of 51.3% can be steadily realized at an increased current density of 60 mA cm(-2), while an enhanced capacity retention over extended 200 charge-discharge cycles is also observed by introducing saturated ammonium chloride into sulfuric acid. The proposed dopamine-based catholyte not only successfully offers a new alternative for aqueous organic redox flow batteries, but its performance can be also further promoted by rational molecule design and optimizations in mass transfer and electrode kinetics.
关键词	Organic aqueous flow battery Dopamine Organic catholyte Electrochemistry High redox potential
资助者	National Natural Science Foundation of China ; Institute of Metal Research, Chinese Academy of Sciences
DOI	10.1016/j.jpowsour.2020.228124
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21805290] ; National Natural Science Foundation of China[21706266] ; Institute of Metal Research, Chinese Academy of Sciences
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000528272200015
出版者	ELSEVIER
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/138656
专题	中国科学院金属研究所
通讯作者	Li, Xiangrong; Tang, Ao
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Liu, Quanbing,Li, Xiangrong,Yan, Chuanwei,et al. A dopamine-based high redox potential catholyte for aqueous organic redox flow battery[J]. JOURNAL OF POWER SOURCES,2020,460:9.
APA	Liu, Quanbing,Li, Xiangrong,Yan, Chuanwei,&Tang, Ao.(2020).A dopamine-based high redox potential catholyte for aqueous organic redox flow battery.JOURNAL OF POWER SOURCES,460,9.
MLA	Liu, Quanbing,et al."A dopamine-based high redox potential catholyte for aqueous organic redox flow battery".JOURNAL OF POWER SOURCES 460(2020):9.