Abstract
Blend-based polymer electrolytes composed of poly(ethylene oxide)(PEO), poly(oligo[oxyethylene]oxysebacoyl)(PES) and lithium perchlorate have been prepared. The characteristics of these polymer electrolytes were investigated in terms of blend composition and salt concentration. The addition of PEO to PES/LiClO 4 complex significantly improved the dimensional stability with a slight decrease in the latter's ionic conductivity. The PEO(40)/PES(60)/LiClO 4 electrolyte at [LiClO 4] [EO] = 0.10 exhibited an ionic conductivity of 3 × 10 −5 S/cm at 25 °C, and was an elastomeric material with dimensional stability. The lithium transport number in this system was determined to be about 0.37 at 40 °C.
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