Enhanced electrochemical properties of polyblend electrolyte on quartz plate by spin-coating: Energy storage devices

Abstract

Preparation of polyblend electrolyte of Poly (ethylene oxide), Poly (vinyl pyrrolidone) and doped cobalt chloride at 45:45:10 wt% compositions by spin-coat technique on quartz substrate. The obtained solvent free solid polymer (PEO/PVP/CoCl2) electrolyte film of ∼42 μm thin onto periodically patterned substrate. The surface morphology was carried using scanning electron microscope (SEM). The cyclic voltammogram study confirms that the polymer blend with the existence of cobalt units (Co2+) is more stable in the electrochemical environment. The studies on the electrochemical and morphological properties of polymer blend electrolyte have attracted much attention in view of their applications in electronic and optical devices, like electro-chromic display devices, fuel cells, gas sensors, solid state batteries etc.