Study of ionic conductivity, dielectric characteristics and capacitance measurement of γ-irradiated conducting polymeric electrolytes

Abstract

High conductivity and high specific capacitance of certain kinds of ion-conducting solid polymer electrolytes has been the subject of intensive study in recent years. These materials play an important role in understanding the polymer characteristics and its technological applications with tremendous impact on several aspects of our life. Extensive studies have been undertaken to investigate ion transport behavior and the effect of γ-irradiation on polymer materials. In this communication, an attempt has been made to study the electrical and dielectric properties including capacitance measurement for pure PVA and PVA-H₃PO₄ complexed electrolytes under γ-radiation. Various parameters such as conductivity, dielectric constant, dielectric loss, loss tangent and capacitance values have been determined using complex impedance method over the temperature range 303–383 K and frequency domain 10 kHz–1 MHz for different molar ratios of complexed materials. Particular attention and emphasis have been given to the conducting polymers in the capacitance performance of the polymeric system.

Keywords:

• conducting polymers
• ionic conductivity
• dielectric constant
• γ-irradiation

Acknowledgements

The authors are grateful to BARC Mumbai for providing γ-radiation facilities and UGC New Delhi for financial support.