Studies on structural, thermal and AC conductivity scaling of PEO-LiPF6 polymer electrolyte with added ionic liquid [BMIMPF6]

被引:71
作者
Chaurasia, S. K. [1 ]
Saroj, A. L. [1 ]
Shalu [1 ]
Singh, V. K. [1 ]
Tripathi, A. K. [1 ]
Gupta, A. K. [1 ]
Verma, Y. L. [1 ]
Singh, R. K. [1 ]
机构
[1] Banaras Hindu Univ, Dept Phys, Ion Liquid & Solid State Ion Lab, Varanasi 221005, Uttar Pradesh, India
关键词
PHYSICOCHEMICAL PROPERTIES; GEL ELECTROLYTES; VINYL MONOMERS; DEPENDENCE; STABILITY; MEMBRANES; MOBILITY; MOTION; SALT;
D O I
10.1063/1.4927768
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Preparation and characterization of polymer electrolyte films of PEO+10wt.% LiPF6+xwt.% BMIMPF6 (1-butyl-3-methylimidazolium hexafluorophosphate) containing dopant salt lithium hexafluorophosphate (LiPF6) and ionic liquid (BMIMPF6) having common anion PF6- are reported. The ionic conductivity of the polymer electrolyte films has been found to increase with increasing concentration of BMIMPF6 in PEO+10 wt.% LiPF6 due to the plasticization effect of ionic liquid. DSC and XRD results show that the crystallinity of polymer electrolyte decreases with BMIMPF6 concentration which, in turn, is responsible for the increase in ionic conductivity. FTIR spectroscopic study shows the complexation of salt and/or ionic liquid cations with the polymer backbone. Ion dynamics behavior of PEO+LiPF6 as well as PEO+LiPF6+BMIMPF6 polymer electrolytes was studied by frequency dependent conductivity, sigma(f) measurements. The values sigma(f) at various temperatures have been analyzed in terms of Jonscher power law (JPL) and scaled with respect to frequency which shows universal power law characteristics at all temperatures. (C) 2015 Author(s).
引用
收藏
页数:13
相关论文
共 62 条
[1]   Highly conductive PEO-like polymer electrolytes [J].
Abraham, KM ;
Jiang, Z ;
Carroll, B .
CHEMISTRY OF MATERIALS, 1997, 9 (09) :1978-1988
[2]   Ac conductivity and dielectric permittivity of poly(ethylene glycol) during crystallization: Percolation picture [J].
Alig, I ;
Dudkin, SA ;
Jenninger, W ;
Marzantowicz, M .
POLYMER, 2006, 47 (05) :1722-1731
[3]   THE EXTRACTION OF IONIC CONDUCTIVITIES AND HOPPING RATES FROM AC CONDUCTIVITY DATA [J].
ALMOND, DP ;
HUNTER, CC ;
WEST, AR .
JOURNAL OF MATERIALS SCIENCE, 1984, 19 (10) :3236-3248
[4]   Ionic Liquids: Past, present and future [J].
Angell, C. Austen ;
Ansari, Younes ;
Zhao, Zuofeng .
FARADAY DISCUSSIONS, 2012, 154 :9-27
[5]   KINETICS AND STABILITY OF THE LITHIUM ELECTRODE IN POLY(METHYLMETHACRYLATE)-BASED GEL ELECTROLYTES [J].
APPETECCHI, GB ;
CROCE, F ;
SCROSATI, B .
ELECTROCHIMICA ACTA, 1995, 40 (08) :991-997
[6]  
Armand M., 2009, NATURE MAT, V621
[7]   POLYMER ELECTROLYTES [J].
BRUCE, PG ;
VINCENT, CA .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1993, 89 (17) :3187-3203
[8]   Semiconductor-dispersed polymer electrolyte composites [J].
Chandra, A ;
Singh, PK ;
Chandra, S .
SOLID STATE IONICS, 2002, 154 :15-20
[9]   MIXED-ANION EFFECT IN POLYETHYLENE-OXIDE-BASED SODIUM-ION-CONDUCTING POLYMER ELECTROLYTES [J].
CHANDRA, A ;
CHANDRA, S .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1994, 27 (10) :2171-2179
[10]   Dielectric Relaxation and Conductivity Studies on (PEO:LiClO4) Polymer Electrolyte with Added Ionic Liquid [BMIM][PF6]: Evidence of Ion-Ion Interaction [J].
Chaurasia, Sujeet K. ;
Singh, Rajendra K. ;
Chandra, S. .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2011, 49 (04) :291-300