Thermal and Optical Properties of NiO nano doped in PVDF-HFP: Mg(ClO4)2 Nano Composite Solid Polymer Electrolytes

Abstract

NiO doped nano composite solid polymer electrolytes (SPEs) composed of PVDF-HFP (poly (vinylidene Fluoride hexafluoropropylene)): Mg(ClO4)2 with different weight concentration of NiO nanofillers synthesized by solution cast technique. NiO incorporated nano composite polymer electrolytes are characterized by UV-Visible spectroscopy to find direct and indirect band gaps. The thermal stability and structural changes of the nano composite polymer electrolytes is studied by DSC and noticed that PSN12 sample having optimum change. The changes in band gap values maybe due to greater number of Ni and Mg atoms from NiO and Mg(ClO4)2 salt are coordinating by donating electrons to F atom of the PVDF-HFP polymer. From the optical absorption measurements, the found values direct and indirect band gap was low, and these values are 3.8252 eV and 1.6885 eV respectively for the polymer electrolyte sample PSN12 where weight ratio of NiO is12% nanofiller incorporated PVDF-HFP: Mg(ClO4)2 polymer electrolyte.