High performance and long cycle life neutral zinc-iron flow batteries enabled by zinc-bromide complexation

doi:10.1016/j.ensm.2021.10.043

IMR OpenIR

	High performance and long cycle life neutral zinc-iron flow batteries enabled by zinc-bromide complexation
	Yang, Minghui 1; Xu, Zhizhao 1; Xiang, Weizhe 1; Xu, He 1; Ding, Mei 1,2; Li, Liangyu 1; Tang, Ao 3; Gao, Runhua 4,5; Zhou, Guangmin 4,5; Jia, Chuankun 1,2
通讯作者	Ding, Mei(dingmei@csust.edu.cn) ; Tang, Ao(a.tang@imr.ac.cn) ; Zhou, Guangmin(guangminzhou@sz.tsinghua.edu.cn) ; Jia, Chuankun(jiachuankun@csust.edu.cn)
	2022
发表期刊	ENERGY STORAGE MATERIALS
ISSN	2405-8297
卷号	44 页码:433-440
摘要	Zinc-based flow batteries have attracted tremendous attention owing to their outstanding advantages of high theoretical gravimetric capacity, low electrochemical potential, rich abundance, and low cost of metallic zinc. Among which, zinc-iron (Zn/Fe) flow batteries show great promise for grid-scale energy storage. However, they still face challenges associated with the corrosive and environmental pollution of acid and alkaline electrolytes, hydrolysis reactions of iron species, poor reversibility and stability of Zn/Zn2+ redox couple. In this work, bromide ions are used to stabilize zinc ions via complexation interactions in the cost-effective and eco-friendly neutral electrolyte. Cyclic voltammetry results reveal that the redox reversibility between Zn and stabilized Zn2+ is greatly improved. The results of spectrum characterizations and density functional theory calculations verify that the formation of Zn[Br-n(H2O)(6-n)](2-n) (1 <= n <= 4, n is integer.) ions accounts for the increased electrochemical reversibility of Zn/Zn2+ pair. Moreover, to overcome the bottleneck of slow kinetics of the coordination interactions between Zn2+ and Br-, ZnBr2 is judiciously selected as the electrolyte additive to promote the complexation process. Adopting K3Fe(CN)(6) as the positive redox species to pair with the zinc anode with ZnBr2 modified electrolyte, the proposed neutral Zn/Fe flow batteries deliver excellent efficiencies and superior cycling stability over 2000 cycles (356 h), shedding light on their great potential for large scale energy storage.
关键词	Zn/Fe flow batteries Electrochemical energy storage Electrolyte additive Redox reversibility Complexation interaction
资助者	100 Talented Team of Hunan Province ; Huxiang High-level talents programs ; Natural Science Foundation of Hunan Province ; Open Fund of National Engineering Laboratory of Highway Maintenance Technology (Changsha Univeristy of Science Technology) ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; Shenzhen Geim Graphene Center
DOI	10.1016/j.ensm.2021.10.043
收录类别	SCI
语种	英语
资助项目	100 Talented Team of Hunan Province[[2016] 91] ; Huxiang High-level talents programs[2018RS3077] ; Huxiang High-level talents programs[2019RS1046] ; Natural Science Foundation of Hunan Province[2020JJ5566] ; Open Fund of National Engineering Laboratory of Highway Maintenance Technology (Changsha Univeristy of Science Technology)[kjf170105] ; National Key Research and Development Program of China[2019YFA0705700] ; National Natural Science Foundation of China[52072205] ; Shenzhen Geim Graphene Center
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000744237700006
出版者	ELSEVIER
引用统计	被引频次：93[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/321006/173677
专题	中国科学院金属研究所
通讯作者	Ding, Mei; Tang, Ao; Zhou, Guangmin; Jia, Chuankun
作者单位	1.Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410114, Peoples R China 2.Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Natl Engn Lab Highway Maintenance Technol, Changsha 410114, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen Geim Graphene Ctr, Shenzhen 518055, Peoples R China 5.Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Yang, Minghui,Xu, Zhizhao,Xiang, Weizhe,et al. High performance and long cycle life neutral zinc-iron flow batteries enabled by zinc-bromide complexation[J]. ENERGY STORAGE MATERIALS,2022,44:433-440.
APA	Yang, Minghui.,Xu, Zhizhao.,Xiang, Weizhe.,Xu, He.,Ding, Mei.,...&Jia, Chuankun.(2022).High performance and long cycle life neutral zinc-iron flow batteries enabled by zinc-bromide complexation.ENERGY STORAGE MATERIALS,44,433-440.
MLA	Yang, Minghui,et al."High performance and long cycle life neutral zinc-iron flow batteries enabled by zinc-bromide complexation".ENERGY STORAGE MATERIALS 44(2022):433-440.