Developing high voltage Zn(TFSI)(2)/Pyr(14)TFSI/AN hybrid electrolyte for a carbon-based Zn-ion hybrid capacitor

doi:10.1039/d1nr03879f

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	Developing high voltage Zn(TFSI)(2)/Pyr(14)TFSI/AN hybrid electrolyte for a carbon-based Zn-ion hybrid capacitor
	Zhang, Li 2; Liu, Ziqiang 1,2; Wang, Gaowei 1,2; Feng, Jianze 1; Ma, Quanhu 1,2
刊名	NANOSCALE
	2021-09
卷号	13 期号:40 页码:17068-17076
ISSN号	2040-3364
DOI	10.1039/d1nr03879f
英文摘要	Aqueous Zn-ion hybrid capacitors (ZIHCs), integrating the typical characteristics of Zinc ion batteries and supercapacitors, have become a promising candidate to replace or supplement lithium-ion energy storage technology. However, the narrow operating voltage window and the instability of the Zn/electrolyte interface caused by aqueous solvents have become a great challenge for practical applications. Here, we developed a new type of hybrid electrolyte (Zn(TFSI)(2)/[[Pyr(14)TFSI](3)](16)/[AN](4)) based on the organic solvent (AN) combined with ionic liquid (Pyr(14)TFSI) and Zn salt (Zn(TFSI)(2)). This non-flammable electrolyte benefited from the synergistic advantages of Pyr(14)TFSI and AN, and could output a wide electrochemical window (3.32 V vs. Zn/Zn2+) and good compatibility with metallic Zn, while possessing excellent wettability. Theoretical and experimental results further reveal that such superb performance originates from the change of Zn coordination environment. Consequently, the constructed ZIHC displays a stable cycling performance (10 000 cycles at 5 A g(-1) without significant capacity fade) and a high operating voltage of 2.1 V. This newly developed electrolyte, which solves the conventional interface problem and improves the voltage window, will promote the development of ZIHCs.
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000704750900001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/149954]
专题	理学院
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China 2.Lanzhou Univ Technol, Sch Sci, Dept Phys, Lanzhou 730050, Gansu, Peoples R China;
推荐引用方式 GB/T 7714	Zhang, Li,Liu, Ziqiang,Wang, Gaowei,et al. Developing high voltage Zn(TFSI)(2)/Pyr(14)TFSI/AN hybrid electrolyte for a carbon-based Zn-ion hybrid capacitor[J]. NANOSCALE,2021,13(40):17068-17076.
APA	Zhang, Li,Liu, Ziqiang,Wang, Gaowei,Feng, Jianze,&Ma, Quanhu.(2021).Developing high voltage Zn(TFSI)(2)/Pyr(14)TFSI/AN hybrid electrolyte for a carbon-based Zn-ion hybrid capacitor.NANOSCALE,13(40),17068-17076.
MLA	Zhang, Li,et al."Developing high voltage Zn(TFSI)(2)/Pyr(14)TFSI/AN hybrid electrolyte for a carbon-based Zn-ion hybrid capacitor".NANOSCALE 13.40(2021):17068-17076.