A new polymer electrolyte system (PEO)n:NaPO3

被引:68
作者
Bhide, Amrtha [1 ]
Hariharan, K. [1 ]
机构
[1] Indian Inst Technol, Dept Phys, Solid State Ion Lab, Madras 600036, Tamil Nadu, India
关键词
polymer metal salt complex; crystallinity; transport number; plasticizer; conductivity;
D O I
10.1016/j.jpowsour.2005.11.096
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A new Na+ ion conducting polymer electrolyte, based on poly(ethylene oxide) (PEO) and sodium meta phosphate (NaPO3) is investigated. (PEO),:NaPO3 polymer metal salt complexes with different [ethylene oxide]/Na ratios (n = 3, 4, 6, 8 and 10) are prepared by the solution casting method. Dissolution of the salt into the polymer host is confirmed by X-ray diffraction, differential scanning calorimetry (DSC) and scanning electron microscopy. Further, interaction of the polymer chains with the metal salt is substantiated by Fourier transform infrared spectroscopy. The electrical conductivity of the samples is measured over the temperature range 322-351 K. The temperature dependent conductivity exhibits two different activation energies, below and above the softening point of the polymer. The composition (PEO)(6):NaPO3 is found to exhibit the least crystallinity but the highest conductivity 2.8 x 10(-8) S cm(-1) at 351 K. The electronic transport number, measured by the dc polarization technique, shows that the conducting species are ionic in nature. The effect of ethylene carbonate on the best conducting composition is investigated by DSC and impedance spectroscopy. The addition of 20 wt.% ethylene carbonate, increases the amorphous phase and enhances the conductivity by two orders of magnitude. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:1450 / 1457
页数:8
相关论文
共 27 条
[1]   IONIC-CONDUCTIVITY IN SOLID, CROSS-LINKED DIMETHYLSILOXANE-ETHYLENE OXIDE COPOLYMER NETWORKS CONTAINING SODIUM [J].
ADAMIC, KJ ;
GREENBAUM, SG ;
WINTERSGILL, MC ;
FONTANELLA, JJ .
JOURNAL OF APPLIED PHYSICS, 1986, 60 (04) :1342-1345
[2]   Physical and ionic transport studies on poly(ethylene oxide)-NaNO3 polymer electrolyte system [J].
Anantha, PS ;
Hariharan, K .
SOLID STATE IONICS, 2005, 176 (1-2) :155-162
[3]   RUBBERY SOLID ELECTROLYTES WITH DOMINANT CATIONIC TRANSPORT AND HIGH AMBIENT CONDUCTIVITY [J].
ANGELL, CA ;
LIU, C ;
SANCHEZ, E .
NATURE, 1993, 362 (6416) :137-139
[4]  
Armand M. B., 1979, Fast Ion Transport in Solids. Electrodes and Electrolytes, P131
[5]   Electrochemistry of liquids vs. solids: Polymer electrolytes [J].
Baril, D ;
Michot, C ;
Armand, M .
SOLID STATE IONICS, 1997, 94 (1-4) :35-47
[6]  
BOUKAMP BA, 1989, CT12888CT11289
[7]  
Bruce P. G., 1995, SOLID STATE ELECTROC
[8]   POLYMER ELECTROLYTES [J].
BRUCE, PG ;
VINCENT, CA .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1993, 89 (17) :3187-3203
[9]   MOLECULAR TRANSPORT IN LIQUIDS AND GLASSES [J].
COHEN, MH ;
TURNBULL, D .
JOURNAL OF CHEMICAL PHYSICS, 1959, 31 (05) :1164-1169
[10]   INFRARED SPECTROSCOPIC STUDY OF THE PHASES AND PHASE-TRANSITIONS IN POLY(ETHYLENE OXIDE) AND POLY(ETHYLENE OXIDE)-LITHIUM TRIFLUOROMETHANESULFONATE COMPLEXES [J].
DISSANAYAKE, MAKL ;
FRECH, R .
MACROMOLECULES, 1995, 28 (15) :5312-5319