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Blend polymer electrolytes have been produced with the use of poly (vinylidene fluoride) (PVDF)and Poly (vinylpyrrolidone) (PVP) mixed with NaClO4 by the method of solution cast technique. Characteristics of the Fourier transform infrared spectroscopy(FTIR), X-ray diffraction (XRD), and scanning electron microscopy are studied to authorize the complexation of sodium perchlorate salt with blend systems. AC and DC conductivity studies are carried out for all blend systems by changing PVP wt%, and PVDF wt% at fixed 4 weight percentage of NaClO4. Impedance spectroscopy has been used to examine the nonconducting (Dielectric) properties, and electric modulus (M*) from 10Hz to 30 MHz between 298 K and 343 K for all the systems. The maximum ionic conductivity is noticed for PVDF: PVP-NaClO4 (20:80-4) system at room temperature, that could be due to decrease in the crystalline nature and enlargement of amorphous region. The variation of ionic conductivity of the blend polymer electrolyte systems with temperature followed Arrhenius behaviour and the maximum ionic conductivity 4.332x10-5 S cm-1 was observed for PP-4 System at room temperature.

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