Solid Biopolymer Electrolytes for Sustainable and High‐Performance Magnesium Batteries

ABSTRACT Recent discoveries in electrolyte systems are advancing energy storage using sustainable materials. Research on biodegradable power sources has grown in recent years to address the risks posed by current primary battery technologies. In the present research, a solid biopolymer membrane has been synthesized based on Sodium alginate (NaAlg) as the host biopolymer incorporated with Magnesium trifluoromethanesulfonate (Mg(CF 3 SO 3 ) 2 ) has been used as an ionic dopant. The casting method is employed for the preparation of the biopolymer membrane. Several characterization techniques were performed for this present work. The X‐Ray diffraction analysis indicates that the incorporation of Mg(CF 3 SO 3 ) 2 into NaAlg. The prepared biopolymer electrolytes are subjected to the Fourier Transform Infrared Spectroscopy analysis to figure out if the host biopolymer and the Mg(CF 3 SO 3 ) 2 have complexed. The solid biopolymer electrolytes' flexibility is demonstrated by using differential scanning calorimetric analysis. The electrochemical stability and ionic conductivity are determined by the interaction between the NaAlg biopolymer and the Mg(CF 3 SO 3 ) 2 salt.