Journal
IONICS
Volume 12, Issue 1, Pages 53-56Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-006-0009-3
Keywords
polymer electrolyts; PVA-KOH-PC composite; ionic conductivity
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The aim of this work is to enhance the room temperature conductivity of solid alkaline composite polymer electrolytes (ACPEs) based on polyvinyl alcohol/potassium hydroxide/propylene carbonate (PVA-KOH-PC) composites by cross-linking the PVA and bond scission of the PC by gamma-radiation. The ACPEs were prepared by solvent-casting technique and irradiated with doses up to 200 kGy at room temperature. The microstructure of the ACPEs was measured using XRD spectrometer, and the results show the structural change from semicrystalline to amorphous, indicating that the cross-linking has been achieved at higher doses. It was found that the PKOH composite at 40 wt% KOH and PPC composite at 60 wt% PC show higher conductivities. The conductivity of the PKPC composites is dominated by dc conductivity at higher frequencies and that PC with 60 wt% has the highest conductivity at a dose of 200 kGy.
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