Synergetic Modulation on Solvation Structure and Electrode Interface Enables a Highly Reversible Zinc Anode for Zinc-Iron Flow Batteries

doi:10.1021/acsenergylett.2c00560

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	Synergetic Modulation on Solvation Structure and Electrode Interface Enables a Highly Reversible Zinc Anode for Zinc-Iron Flow Batteries
	Yang, Jing 2,3; Yan, Hui 2,3; Hao, Huanhuan 2,3; Song, Yuxi 2,3; Li, Ying 3; Liu, Qinghua 1; Tang, Ao 3
刊名	ACS ENERGY LETTERS
	2022-06-17
页码	2331-2339
ISSN号	2380-8195
DOI	10.1021/acsenergylett.2c00560
通讯作者	Liu, Qinghua(qinghua8398@163.com) ; Tang, Ao(a.tang@imr.ac.cn)
英文摘要	Zinc-based flow batteries hold great potential for grid-scale energy storage because of their high energy density, low cost, and high security. However, the inferior reversibility of Zn2+/Zn on porous carbon electrodes significantly deteriorates long-term zinc anode stability and, thus, impedes further technological advances for zinc-based flow batteries. Herein, we propose nicotinamide (NAM) as a cost-effective additive to neutral ZnCl2 anolyte, which realizes highly reversible zinc plating/striping reactions on carbon felt electrodes for zinc-iron flow batteries. Experimental characterization and theoretical calculation prove that the nicotinamide not only effectively reshapes the Zn2+ solvation structure by substituting two water molecules from the primary Zn2+-6H(2)O solvation shell but also is capable of adsorbing on deposited zinc layers to regulate Zn2+ diffusion toward the electrode interface and avoid an undesirable tip effect, thereby affording uniformly dendrite-free zinc deposition and significantly enhanced Zn plating/striping reversibility. Benefiting from NAM additives, the zinc-iron flow battery demonstrates a good combination of high power density (185 mW cm(-2)), long cycling stability (400 cycles, 120 h), enhanced resistance to self-discharge (98.9% capacity retention in 12 h), and preeminent battery efficiency (70% energy efficiency at 50 mA cm(-2)), which provides a new pathway to developing a robust zinc anode for advanced flow batteries.
资助项目	Natural Science Foundation of Liaoning Province[2020-MS-012] ; Chinese Energy Group Science and Technology Innovation
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000819585300001
资助机构	Natural Science Foundation of Liaoning Province ; Chinese Energy Group Science and Technology Innovation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174894]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Qinghua; Tang, Ao
作者单位	1.Natl Inst Clean & Low Carbon Energy, Beijing 102211, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Yang, Jing,Yan, Hui,Hao, Huanhuan,et al. Synergetic Modulation on Solvation Structure and Electrode Interface Enables a Highly Reversible Zinc Anode for Zinc-Iron Flow Batteries[J]. ACS ENERGY LETTERS,2022:2331-2339.
APA	Yang, Jing.,Yan, Hui.,Hao, Huanhuan.,Song, Yuxi.,Li, Ying.,...&Tang, Ao.(2022).Synergetic Modulation on Solvation Structure and Electrode Interface Enables a Highly Reversible Zinc Anode for Zinc-Iron Flow Batteries.ACS ENERGY LETTERS,2331-2339.
MLA	Yang, Jing,et al."Synergetic Modulation on Solvation Structure and Electrode Interface Enables a Highly Reversible Zinc Anode for Zinc-Iron Flow Batteries".ACS ENERGY LETTERS (2022):2331-2339.