Characterization of biopolymer pectin with lithium chloride and its applications to electrochemical devices

Natural anionic polysaccharide pectin-based flexible electrolyte with different compositions of LiCl has been prepared by solution casting technique. The prepared membranes have been characterized by X-ray Diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and AC complex impedance analysis. The pectin/LiCl (50:50 M.wt%) complex exhibits high ionic conductivity in the order of 2.08 × 10−3 S cm−1. The temperature-dependent ionic conductivity obeys the Arrhenius behavior. The best performing membrane has been used to construct the primary lithium ion battery. The open-circuit voltage of the constructed primary lithium ion battery is found to be 1.93 V.