Effect of glass-ceramic filler on properties of polyethylene oxide-LiCF3SO3 complex

Leo, C. J. ; Thakur, A. K. ; Subba Rao, G. V. ; Chowdari, B. V. R. (2003) Effect of glass-ceramic filler on properties of polyethylene oxide-LiCF3SO3 complex Journal of Power Sources, 115 (2). pp. 295-304. ISSN 0378-7753

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0378-7753(03)00007-7

Abstract

Lithium-ion conducting composite polymer electrolytes (CPE),(PEO)8-LiCF3SO3 (PEO=polyethylene oxide) dispersed with a glass-ceramic, Li1.4[Al0.4Ge1.6(PO4)3] as a filler have been prepared as films and their thermal, mechanical, electrical and electrochemical properties have been studied. The glass transition temperature increases with filler addition reaches a maximum value of -39 °C for x=7.5 wt.%, and then decreases. Enhancement in the electrochemical stability of the films is noted; a maximum working voltage of 3.75 V is found at x=10 wt.%. Addition of filler decreases the ionic conductivity for x=7.5 wt.%, σ=1.6×10−7 S cm−1 which is a factor three lower than that for the PS complex. The Ea and log100) values of the composite polymer electrolytes consistently decrease with increasing x. The mechanical properties are enhanced with filler addition, a maximum tensile strength of 22.8 MPa, is obtained at x=7.5-10 wt.%, a value which is three times higher than that for the PS complex.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Composite Polymer Electrolytes; Ionic Conductivity; Glass-transition Temperature; Tensile Strength; Breakdown Voltage; Lithium-ion
ID Code:52030
Deposited On:02 Aug 2011 08:22
Last Modified:02 Aug 2011 08:22

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