Vol. 3, Issue 3 (2015)
A comprehensive study of conductivity and dielectric behaviour of polyethylene oxide-lithium perchlorate solid polymer electrolyte films
Author(s): Dr. Ravindra Singh Yadav
Abstract: Solid polymer electrolyte (SPE) are defined as a solvent-free salt solution in a polymer host material that conducts ions through the polymer chains. Compared to ISEs, SPEs are much easier to process, generally by solution casting, making them greatly compatible with large-scale manufacturing processes. Solid polymer electrolytes (SPEs) consisting of polyethylene oxide (PEO) complexes with lithium perchlorate (LiClO4) have been synthesized by solution casting method. The ionic conductivity, dielectric response of the SPE system is studied within the frequency range of 100 Hz-1 MHz and in the temperature range of 303-353 K. The room temperature ionic conductivity value of PEO-LiClO4 electrolyte is found to be ~10-5 S cm-1. The dielectric properties were studied using the complex dielectric permittivity spectra and complex electric modulus spectra of the SPE films. It is observed that magnitude of dielectric permittivity is high in the lower frequency region due to electrode polarization (EP) effect. The dielectric permittivity and loss were increased with increase of temperature. The AC conductivity follows universal power law with a small deviation in the EP dominated low frequency region.
Pages: 63-67 | 461 Views 135 Downloads
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How to cite this article:
Dr. Ravindra Singh Yadav. A comprehensive study of conductivity and dielectric behaviour of polyethylene oxide-lithium perchlorate solid polymer electrolyte films. Int J Chem Stud 2015;3(3):63-67.
