气候变化领域集成服务门户(CCPortal): A highly reversible zinc deposition for flow batteries regulated by critical concentration induced nucleation

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DOI	10.1039/d1ee00783a
	A highly reversible zinc deposition for flow batteries regulated by critical concentration induced nucleation
	Wang S.; Wang Z.; Yin Y.; Li T.; Chang N.; Fan F.; Zhang H.; Li X.
发表日期	2021
ISSN	17545692
起始页码	4077
结束页码	4084
卷号	14 期号:7
英文摘要	Aqueous zinc-based flow batteries (ZFBs) represent one of the most promising energy storage technologies benefiting from their high safety and competitive energy density. However, the morphological evolution of Zn still remains vague but is significant in the electrolyte, whose Zn2+ concentration constantly decreases during Zn plating. Herein, we present a comprehensive experimental investigation on the morphological evolution and mechanism of deposited Zn in ZFBs and find that the formation of dense blocky Zn is controlled by instantaneous nucleation in concentrated electrolyte (≥0.4 M); in dilute electrolyte (≤0.3 M), Zn becomes mossy because of progressive nucleation. Simultaneously, the dominant plane of Zn crystals changes from (002) to (101). Besides, the recombination of Zn crystals on the same crystal plane was observed by in situ atomic force microscopy (AFM). Significantly, to maintain a high coulombic efficiency (CE >99.5%) and long cycling stability, an operating critical concentration range (≥0.4 M) and the optimized electrolyte utilization rate is proposed according to the Zn morphological evolution. This exploratory work will be beneficial for the further research of Zn anodes in electrochemical energy storage devices. © The Royal Society of Chemistry.
英文关键词	Atomic force microscopy; Crystallization; Electrolytes; Energy storage; Flow batteries; Nucleation; Critical concentration; Electrochemical energy storage devices; Energy storage technologies; Experimental investigations; Instantaneous nucleations; Morphological evolution; Progressive nucleation; Situ atomic force microscopy; Zinc metallography; concentration (composition); electrolyte; energy storage; fuel cell; induced response; nucleation; zinc
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190609
作者单位	Division of Energy Storage, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China; State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Collaborative Innovation Center of Chemistry for Energy Materials (IChEM), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China; Collaborative Innovation Center of Chemistry for Energy Materials (IChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
推荐引用方式 GB/T 7714	Wang S.,Wang Z.,Yin Y.,et al. A highly reversible zinc deposition for flow batteries regulated by critical concentration induced nucleation[J],2021,14(7).
APA	Wang S..,Wang Z..,Yin Y..,Li T..,Chang N..,...&Li X..(2021).A highly reversible zinc deposition for flow batteries regulated by critical concentration induced nucleation.Energy & Environmental Science,14(7).
MLA	Wang S.,et al."A highly reversible zinc deposition for flow batteries regulated by critical concentration induced nucleation".Energy & Environmental Science 14.7(2021).