Improved performance of silver doped titania/poly(vinylidine fluoride) nanofibers polymer electrolyte for lithium ion battery

Novel hybrid nanofibrous polymer electrolyte with high ionic conductivity and excellent electrochemical performance is developed by two step hydrothermal and electrospinning process. As-synthesized silver doped titania (Ag-TiO2) nanoparticles were incorporated in electrospinning solution of poly(vinylidine fluoride) for the preparation of Ag-TiO2/PVdF nanofibers. As-fabricated Ag-TiO2 /PVdF nanofibers have been characterized by scanning electron microscopy with energy dispersive x-ray spectroscopy. Ag-TiO2 nanoparticles incorporated PVdF has advantages of both large surface area of nanoparticles and interlaying porous structure of nanofibers which is desirable for stable performance of battery. The prepared cell LiFePO4/Li with electrolyte Ag-TiO2/PVdF delivered excellent cyclic stability with high discharge capacity and coulombic efficiency of 100% after 50 cycles at 0.1 C as compared that of pure PVdF and TiO2/PVdF electrolytes. The hybrid Ag-TiO2 /PVdF polymer electrolytes are expected to be a promising candidate for lithium ion battery. (C) 2018 Elsevier B.V. All rights reserved.