Structural and ionic conductivity of PEO blend PEG solid polymer electrolyte

M. Jaipal Reddy, J. Siva Kumar, U. V. Subba Rao, Peter P. Chu

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Structural and ionic conductivity of PEO blend PEG with KI solid polymer electrolyte system is presented. The polymer PEG showed miscible with the high molecular weight polymer PEO. The X-ray diffraction patterns of PEO/PEG with KI salt indicated the decrease in the degree of crystallinity with increasing concentration of the salt. The DSC measurements of PEO/PEG:KI polymer electrolyte system showed that the melting temperature is shifted towards the lower temperature with increase of the salt concentration. Optical micrographs demonstrated that the spherulites of different sizes are present along with dark regions between the spherulites for lower salt compositions. With increase of salt concentration more amorphous regions are observed. The significance of blend is the increase of one order in ionic conductivity when compared to without blend PEO electrolyte.

Original languageEnglish
Pages (from-to)253-256
Number of pages4
JournalSolid State Ionics
Issue number3-4
StatePublished - 31 Jan 2006


  • DSC
  • Ionic conductivity
  • Optical micrographs
  • Polymer electrolyte
  • X-ray diffraction


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