Abstract
Elastomers constituted of the homopolymer of epichlorohydrin, its copolymer with ethylene oxide and its terpolymer with ethylene oxide and allyl-glycidyl-ether were studied as polymeric electrolytes in polymer/LiClO 4 systems. The variation of the ionic conductivity with salt concentration indicated that the copolymer and the terpolymer show the highest conductivities, ca. 10 −5 S cm −1 at 30 °C. Also, the fitting of the ionic conductivity versus inverse of temperature curves with the VTF equation indicated a conductivity mechanism similar to poly(ethylene oxide) for the copolymer and the terpolymer. The potential stability window determined by cyclic voltammetry is 3.5 V and the polymers are stable to heating up to 250 °C. These results confirm the feasibility of using the copolymer and the terpolymer systems with LiClO 4 as polymeric solid state electrolytes.
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