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Ionics

, Volume 24, Issue 10, pp 3027–3037 | Cite as

Modification in the transport and morphological properties of solid polymer electrolyte system by low-energy ion irradiation

  • H. Manjunatha
  • R. Damle
  • Kumar Pravin
  • G. N. Kumaraswamy
Original Paper

Abstract

The poly(ethylene oxide) (PEO)-based solid polymer electrolyte (SPE) systems consisting of NaBr as a dopant salt are prepared. The stable PEO:NaBr system with 3 wt% of NaBr was subjected to low-energy ion beam irradiation to bring in morphological modification. The irradiated samples are studied using complex impedance spectra to evaluate electrical conductivity and relaxation process in the system. The studies show an increase in conductivity by one order magnitude in the irradiated systems. The dielectric loss tangent (tanδ) curves show a single peak due to strong coupling of ion transport with segmental motion. The resultant relaxation time τ exhibits a continuous decrease indicating increase in segmental dynamics as a result of increased amorphous content in the system. The temperature-dependent studies also indicate that the irradiated systems are more disordered/amorphous compared to pure systems. This fact is further supported by XRD, by observing an increase in peak width associated with reduction in peak intensity. The Raman spectra also support the change in morphology of the system by the appearance of disordered-longitudinal acoustic mode band.

Keywords

Solid polymer electrolyte Ion irradiation Ion transport Segmental relaxation 

Notes

Acknowledgements

The authors gratefully acknowledge IUAC, New Delhi, for providing Low Energy Ion Beam Facility. The authors thank MNCF, IISc, for providing XRD facility. Thanks are also due to Dr. Sridhar Reddy, SV University, for extending SEM and Raman spectrum recording facilities.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • H. Manjunatha
    • 1
  • R. Damle
    • 2
  • Kumar Pravin
    • 3
  • G. N. Kumaraswamy
    • 1
  1. 1.Department of PhysicsAmrita School of Engineering, Amrita Vishwa VidyapeethamBengaluruIndia
  2. 2.Department of PhysicsBangalore UniversityBengaluruIndia
  3. 3.Inter-University Accelerator CentreNew DelhiIndia

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