Hybrid gel polymer electrolyte based on 1-methyl-1-Propylpyrrolidinium Bis(Trifluoromethanesulfonyl) imide for flexible and shape-variant lithium secondary batteries

doi:10.1016/j.memsci.2020.119018

	Hybrid gel polymer electrolyte based on 1-methyl-1-Propylpyrrolidinium Bis(Trifluoromethanesulfonyl) imide for flexible and shape-variant lithium secondary batteries
	Ravi, Muchakayala 6; Kim, Sanghoon 1; Ran, Fen 2,4; Kim, Dong Soo 3; Lee, Yong Min 5; Ryou, Myung-Hyun 6
刊名	Journal of Membrane Science
	2021-03-01
卷号	621
关键词	Conducting polymers Fluorine compounds Ionic liquids Iron compounds Lithium compounds Lithium-ion batteries Mechanical stability Solid electrolytes Solid-State Batteries Thermodynamic stability Bis(trifluoromethane sulfonyl)imide Composition dependence Discharge characteristics Electrochemical stabilities Gel polymer electrolytes Lithium iron phosphates Lithium secondary batteries Poly(vinylidene fluoride-co-hexafluoropropylene)
ISSN号	03767388
DOI	10.1016/j.memsci.2020.119018
英文摘要	Lithium ion conducting polymer electrolytes with broad electrochemical stability, good mechanical strength, high thermal stability, and easy processability are necessary for all-solid-state and shape-variant lithium secondary batteries. Hybrid gel polymer electrolytes incorporating an ionic liquid have been attracting attention for application in solid-state lithium secondary batteries owing to their superior thermal properties compared to conventional electrolyte systems. In this study, a variety of polymer electrolytes based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP), lithium bis(trifluoromethanesulfonyl) imide (LiTFSI), and 1-methyl-1-propylpyrrolidinium bis(trifluoromethanesulfonyl) imide (PMPyrrTFSI) are prepared, and an in-depth study of their composition dependence and electrical properties is conducted to develop the optimum composition. The composition dependent ionic conductivity of the polymer electrolyte increases with increasing LiTFSI and PMPyrrTFSI and reaches a maximum value of 6.93 × 10−4 S cm−1 at room temperature (25 °C) when the polymer electrolyte contains 30 wt% LiTFSI and 60 wt% PMPyrrTFSI. In addition, the optimized gel polymer electrolytes consisting of PVdF-HFP/LiTFSI/PMPyrrTFSI (70/30/60 by weight, i.e., 70PVdF-HFP/30LiTFSI/60PMPyrrTFSI) look transparent and exhibit high mechanical stability and excellent thermal stability up to 420 °C. Finally, the lithium iron phosphate (LiFePO4)/lithium metal solid-state cells coupled with the optimized gel polymer electrolyte are prepared, and their discharge characteristics are studied. The 70PVdF-HFP/30LiTFSI/60PMPyrrTFSI based solid-state cell delivered a maximum discharge capacity of 151 mAh g−1 at room temperature with a good rate capability and cycling performance. © 2020 Elsevier B.V.
WOS研究方向	Engineering ; Polymer Science
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000609149800005
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147175]
专题	材料科学与工程学院
作者单位	1.Department of Mechanical Design Engineering, Chonnam National University, 50 Daehak-ro, Yeosu; Chonnam; 59626, Korea, Republic of; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730500, China; 3.Department of Creative Convergence Engineering, Hanbat National University, Daejeon; 34158, Korea, Republic of; 4.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730500, China; 5.Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu; 42988, Korea, Republic of 6.Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu; Daejeon; 34158, Korea, Republic of;
推荐引用方式 GB/T 7714	Ravi, Muchakayala,Kim, Sanghoon,Ran, Fen,et al. Hybrid gel polymer electrolyte based on 1-methyl-1-Propylpyrrolidinium Bis(Trifluoromethanesulfonyl) imide for flexible and shape-variant lithium secondary batteries[J]. Journal of Membrane Science,2021,621.
APA	Ravi, Muchakayala,Kim, Sanghoon,Ran, Fen,Kim, Dong Soo,Lee, Yong Min,&Ryou, Myung-Hyun.(2021).Hybrid gel polymer electrolyte based on 1-methyl-1-Propylpyrrolidinium Bis(Trifluoromethanesulfonyl) imide for flexible and shape-variant lithium secondary batteries.Journal of Membrane Science,621.
MLA	Ravi, Muchakayala,et al."Hybrid gel polymer electrolyte based on 1-methyl-1-Propylpyrrolidinium Bis(Trifluoromethanesulfonyl) imide for flexible and shape-variant lithium secondary batteries".Journal of Membrane Science 621(2021).