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

doi:10.1016/j.jpowsour.2020.228124

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	JOURNAL OF POWER SOURCES
	2020-06-01
卷号	460 页码:9
关键词	Organic aqueous flow battery Dopamine Organic catholyte Electrochemistry High redox potential
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2020.228124
通讯作者	Li, Xiangrong(xrli@imr.ac.cn) ; Tang, Ao(a.tang@imr.ac.cn)
英文摘要	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.
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
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000528272200015
资助机构	National Natural Science Foundation of China ; Institute of Metal Research, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138655]
专题	金属研究所_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.