Green polymer electrolytes for magnesium – ion batteries

The increasing nature of industrial and domestic applications made the necessity of reasonable energy storage capacity as well as source. This made the development towards electrochemical devices. Biopolymer electrolytes have become the world’s attention in facing current issues towards sustainability in energy storage. They aid to reduce the usage of non-renewable petrochemical electrolytes by using the biodegradable product. The current work was on the preparation of blend biopolymer electrolytes with Pectin/Guar Gum as a host. Ethylene carbonate (EC) has been used as plasticizer and Magnesium chloride hexahydrate (MgCl2.6H2O) as a doping salt. Electrolytes were prepared by solution casting method using water as a solvent. The electrolytes were prepared with the different compositions of Pectin/GG/MgCl2 6H2O/EC. The crystalline/Amorphous nature of the film was studied using XRD analysis by X-ray diffraction technique. The interaction between the host and dopant was affirmed by FT-IR studies using Fourier Transform Infrared Spectroscopy technique. The thermal stability of the film was found by Thermo gravimetric analysis (TGA). The average roughness of the film was determined by 3-D Laser Profilometry. Using AC Impedance analysis, the ionic conductivity of the film was measured and the maximum ionic conductivity value 2.71×10-3 S/cm was attained for the film containing 40:20:35:5 wt% of Pectin-GG-MgCl2.H2O-EC. The maximum transport number of 0.94 was obtained for the film PGMCEC5 (35:15:45:5 M wt% of Pectin/Guar gum/MgCl2.6 H2O/EC).