Synthesis and characterization of a novel solid biopolymer electrolyte using sodium alginate doped with magnesium salts for magnesium ion batteries

Abstract

There are numerous new discoveries in the field of electrolytes newlinesystem especially in energy storage using green materials. Electrochemical newlinedevices are essential in industrial sector due to their huge contribution in newlineenergy storage application. Currently Lithium-ion batteries are most popular, newlinebecause of high energy density, light weight and stable cycle life etc. newlineMoreover, lithium batteries have some disadvantages like high cost, less newlinesafety, dendrite growth and difficult to handle. To overcome these drawbacks, newlineMagnesium batteries are significantly considered due to its low cost, ease newlinefabrication, no dendrite formation and good stability. In addition, magnesium newlinebatteries can be considered as good alternative for high power battery newlineapplications. However, the increasing demand will eventually put pressure on newlinerequired raw materials and also high reactivity of heavy metals pose threat to newlineenvironment. In this regard, research on biodegradable power sources is newlineincreasing in recent years, which can eliminate the threat posed by the current newlineprimary battery technology. Therefore, the solid biopolymer electrolytes newlinesystem has been chosen as one of the new types of electrolytes. newlineIn the present research, solid biopolymer membrane has been newlinesynthesised based on Sodium alginate as the host biopolymer newlineincorporated with various Magnesium salts like Magnesium nitrate newline(Mg(NO3)2·6H2O), Magnesium perchlorate (Mg(ClO4)2) and Magnesium newlinetrifluoromethanesulfonate (Mg(CF3SO3)2 has been used as a ionic dopant. newlineThe solution casting method is employed for the preparation of solid newlinebiopolymer membrane. Several techniques, such as X-Ray and Diffraction newline(XRD), Fourier Transform Infrared (FTIR) spectroscopy, Differential newlineScanning Calorimetry (DSC), AC impedance spectroscopy (EIS), Linear newlineSweep Voltammetry (LSV) and Transference Number Measurement (TNM) newlinewere performed to characterize this present work newline newline