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; Li, Xiangrong; Yan, Chuanwei; Tang, Ao
	2020-06-01
Source Publication	JOURNAL OF POWER SOURCES
Volume	460
Abstract	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.
DOI	10.1016/j.jpowsour.2020.228124
WOS ID	WOS:000528272200015
Citation statistics	Cited Times:2[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/82815
Collection	中国科学院金属研究所
Recommended Citation 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.
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.
MLA	Liu, Quanbing,et al."A dopamine-based high redox potential catholyte for aqueous organic redox flow battery".JOURNAL OF POWER SOURCES 460(2020).

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院金属研究所机构知识库