Abstract
AbstractThis paper reports the synthesis of amorphous polymer electrolytes. Polymer–salt complexes in the ternary system were prepared by mixing two polymers, namely poly(oxyethylene) and poly(oxypropylene glycol), with sodium iodide. This three component system is represented on a ternary pseudophase diagram. The ternary compositions are completely amorphous in a certain composition range and the composition POE–12%POPG–Nal with O/Na = 10 exhibited record high conductivity of 2 × 10−4 (Ω cm)−1 at ambient temperature. Formation of the amorphous electrolyte and the enhanced miscibility of the polymers were analysed using differential scanning calorimetry, X‐ray diffraction and ionic conductivity studies. The cation was found to play a major role in enhancing the miscibility of the polymers.
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