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A dopamine-based high redox potential catholyte for aqueous organic redox flow battery
Liu, Quanbing1,2; Li, Xiangrong1; Yan, Chuanwei1,2; Tang, Ao1,2
Corresponding AuthorLi, Xiangrong(xrli@imr.ac.cn) ; Tang, Ao(a.tang@imr.ac.cn)
2020-06-01
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
Volume460Pages:9
AbstractOrganic 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.
KeywordOrganic aqueous flow battery Dopamine Organic catholyte Electrochemistry High redox potential
Funding OrganizationNational Natural Science Foundation of China ; Institute of Metal Research, Chinese Academy of Sciences
DOI10.1016/j.jpowsour.2020.228124
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[21805290] ; National Natural Science Foundation of China[21706266] ; Institute of Metal Research, Chinese Academy of Sciences
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000528272200015
PublisherELSEVIER
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138656
Collection中国科学院金属研究所
Corresponding AuthorLi, Xiangrong; Tang, Ao
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
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,2020,460:9.
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.
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