Synergistic effects of salt concentration and polymer blend composition on the crystal phases, dielectric relaxation, and ion conduction in PVDF/PEO/LiCF3SO3 solid polymer electrolytes

被引：0
作者：
Priyanka Dhatarwal
R. J. Sengwa
机构：
[1] Jai Narain Vyas University,Dielectric Research Laboratory, Department of Physics
来源：
Ionics | 2020年 / 26卷
关键词：
Solid polymer electrolyte; PVDF/PEO blend; Crystal structures; Dielectric relaxation; Ionic conductivity; Electrochemical performance;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Effects of lithium triflate (LiCF3SO3) salt concentration and compositional weight ratio of poly(vinylidene fluoride) (PVDF)/poly(ethylene oxide) (PEO) blend host matrix on the structural, dielectric relaxation, and ion transport properties of PVDF/PEO/LiCF3SO3 solid polymer electrolyte (SPE) films have been investigated. Variations in the amounts of constituents in these SPEs enormously alter the characteristic crystal phases of polymers and their chain segmental dynamics. Ionic conductivity increases by more than five orders of magnitude on loading LiCF3SO3 amount up to 30 wt% in the 75PVDF/25PEO blend matrix, and by about two orders with the increase of PEO amount from 25 to 90 wt% in the polymer blend host matrix of PVDF/PEO–25 wt% LiCF3SO3 films. Correlation between ionic conductivity and relaxation time confirms that the transport of ions is coupled to the polymer chain segmental motions in these SPEs. Total ion transference number, electrochemical voltage stability, and cyclic performance of these electrolyte materials are determined and appropriately explained.
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页码：2259 / 2275
页数：16
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[21]  
Burke W(2018)Beyond PEO–alternative host materials for Li Electrochim Acta 273 392-401
[22]  
Bao Z(2012)-conducting solid polymer electrolytes Chem Rev 112 2780-2832
[23]  
Cui Y(2012)Preparation and characterizations of PMMA-PVDF based polymer composite electrolyte materials for dye sensitized solar cell Adv Mater 24 4071-4096
[24]  
Golodnitsky D(2017)Highly efficient quasi-solid-state dye-sensitized solar cell using polyethylene oxide (PEO) and poly(methyl methacrylate) (PMMA)-based printable electrolytes Mater Lett 206 60-63
[25]  
Strauss E(2018)Influence of synthesized pyridine and tetra ethylene glycol derivatives in poly (vinylidene fluoride)/poly (ethylene oxide) with Ti coated back contact dye-sensitized solar cells Compos Sci Technol 158 1-8
[26]  
Peled E(2014)Ultrathin all-solid-state supercapacitor devices based on chitosan activated carbon electrodes and polymer electrolytes J Power Sources 245 779-786
[27]  
Greenbaum S(2016)Recent development of polymer electrolyte membranes for fuel cells Electrochim Acta 188 809-817
[28]  
Eshetu GG(2018)Hybrid materials and polymer electrolytes for electrochromic device applications Sustain Energ Fuels 2 492-498
[29]  
Mecerreyes D(2018)Enhanced dc conductivity and conductivity relaxation in PVDF/ionic liquid composites Ionics 24 1965-1978
[30]  
Forsyth M(2018)Effect of annealing treatment on crystalline and dielectric properties of PVDF/PEG-containing ionic liquid composites Membranes 8 45-467
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