Investigations on Structural and Electrical Properties of KClO₄ Complexed PVP Polymer Electrolyte Films

Abstract

Potassium ion-conducting polymer electrolytes based on poly (vinyl pyrrolidone) (PVP) complexed with KClO₄ were prepared using a solution cast technique. These samples were characterized using X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Differential Scanning Calorimetry (DSC), and impedance spectroscopy. The complexation of the salt with polymer was confirmed by FT-IR and XRD studies. The ionic conductivity was found to increase with increasing temperature and salt concentration. The highest ionic conductivity (0.91 × 10⁻⁵ S/cm) and low activation energy (0.29 eV) was obtained for the polymer complexed with 15 wt% KClO₄ among all the compositions.

Keywords:

• conductivity analysis
• polymer electrolyte
• structural characterization
• thermal analysis