Dielectric Relaxation and Conductivity Studies on (PEO:LiClO4) Polymer Electrolyte with Added Ionic Liquid [BMIM][PF6]: Evidence of Ion-Ion Interaction

被引:75
作者
Chaurasia, Sujeet K. [1 ]
Singh, Rajendra K. [1 ]
Chandra, S. [1 ]
机构
[1] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
关键词
ionic conductivity; ion-ion interaction; polymer electrolytes; POLY(ETHYLENE OXIDE) ELECTROLYTES; ELECTROCHEMICAL PROPERTIES; POLYETHYLENE-OXIDE; THERMAL-PROPERTIES; TRANSPORT; SALT; MORPHOLOGY; FILMS; CRYSTALLINITY; METHACRYLATE);
D O I
10.1002/polb.22182
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Polymer electrolytes, (PEO:LiClO4) l x IL (1-Buty-3-methylimidazolium hexafluorophosphate) with varying concentration of IL; x = 0,5,10,15,20 wt % have been prepared by solution cast technique and characterized by X-Ray diffraction, differential scanning calorimetery, FTIR, conductivity and dielectric relaxation measurements in the frequency range of 100 Hz-5 MHz. Temperature dependence of relaxation frequency and conductivity were found to be typical of thermally activated process both at T > T-m and T < T-m. Composition dependence of conductivity, dielectric relaxation, and degree of crystallinity has also been studied. On addition of IL, the degree of crystallinity after a decrease at 5 wt % IL increases slightly at 10 wt % and then finally decreasing. Variation of conductivity and relaxation frequency with composition could only be partly explained on the basis of variation of degree of crystallinity. An additional feature of ion-ion interaction (contact ion pair formation between IL or salt cations and their associated anions) has been invoked which was supported by FTIR studies. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 49: 291-300, 2011
引用
收藏
页码:291 / 300
页数:10
相关论文
共 55 条
[41]   Application of ionic liquids as plasticizers for poly(methyl methacrylate) [J].
Scott, MP ;
Brazel, CS ;
Benton, MG ;
Mays, JW ;
Holbrey, JD ;
Rogers, RD .
CHEMICAL COMMUNICATIONS, 2002, (13) :1370-1371
[42]   Physicochemical properties of proton conducting membranes based on ionic liquid impregnated polymer for fuel cells [J].
Sekhon, S. S. ;
Lalia, Boor Singh ;
Park, Jin-Soo ;
Kim, Chang-Soo ;
Yamada, K. .
JOURNAL OF MATERIALS CHEMISTRY, 2006, 16 (23) :2256-2265
[43]   Ionic liquids to the rescue? Overcoming the ionic conductivity limitations of polymer electrolytes [J].
Shin, JH ;
Henderson, WA ;
Passerini, S .
ELECTROCHEMISTRY COMMUNICATIONS, 2003, 5 (12) :1016-1020
[44]   Electrochemical properties and interfacial stability of (PEO)10LiCF3SO3-TinO2n-1 composite polymer electrolytes for lithium/sulfur battery [J].
Shin, JH ;
Kim, KW ;
Ahn, HJ ;
Ahn, JH .
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2002, 95 (02) :148-156
[45]   Morphology, crystalline structure and thermal properties of PEO/MEEP blends [J].
Silva, V. P. R. ;
Silva, G. G. ;
Caliman, V. ;
Rieumont, J. ;
de Miranda-Pinto, C. O. B. ;
Archanjo, B. S. ;
Neves, B. R. A. .
EUROPEAN POLYMER JOURNAL, 2007, 43 (08) :3283-3291
[46]   Properties of Ionic Liquid Confined in Porous Silica Matrix [J].
Singh, Manish Pratap ;
Singh, Rajendra Kumar ;
Chandra, Suresh .
CHEMPHYSCHEM, 2010, 11 (09) :2036-2043
[47]   Influence of sample history on the morphology and transport properties of PEO-lithium salt complexes [J].
Volel, M ;
Armand, M ;
Gorecki, W .
MACROMOLECULES, 2004, 37 (22) :8373-8380
[48]   Investigation of PEO-imidazole ionic liquid oligomer electrolytes for dye-sensitized solar cells [J].
Wang, Miao ;
Xiao, Xurui ;
Zhou, Xiaowen ;
Li, Xueping ;
Lin, Yuan .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2007, 91 (09) :785-790
[49]   EFFECTS OF INERT FILLERS ON THE MECHANICAL AND ELECTROCHEMICAL PROPERTIES OF LITHIUM SALT POLY (ETHYLENE-OXIDE) POLYMER ELECTROLYTES [J].
WESTON, JE ;
STEELE, BCH .
SOLID STATE IONICS, 1982, 7 (01) :75-79
[50]   COMPARISON OF PROPERTIES OF COMPOSITE POLYMERIC ELECTROLYTES BASED ON THE OXYMETHYLENE-LINKED POLY(ETHYLENE OXIDE) NACLO4 ELECTROLYTE WITH POLYACRYLAMIDE OR ALPHA-AL2O3 ADDITIVES [J].
WIECZOREK, W ;
SUCH, K ;
CHUNG, SH ;
STEVENS, JR .
JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (36) :9047-9055