Design and characterization of polymeric electrolyte from wáter-based polyurethane to improve Li-ion batteries

Abstract

This work focuses on the design, synthesis, and characterization of new polymeric materials for use as electrolytes for Li-ion batteries. Despite significant advances in developed countries, similar progress has not been achieved in our country on the solid state electrolytes issue. In this work, polymer electrolytes films based on waterborne polyurethanes were developed, synthesized by emulsion-dispersion method, and casting technique. The solid polymer electrolytes (SPE) were characterized by: scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD), and electrochemical impedance spectroscopy (EIS).