Structural and electrochemical studies of proton conducting biopolymer blend electrolytes based on MC:Dextran for EDLC device application with high energy density

This study shows preparation and characterization of solid biopolymer electrolyte based on glycerolized methylcellulose (MC): dextran-doped with ammonium thiocyanate (NH4SCN). The nature composition in terms interaction is characterized using Fourier transform infrared (FTIR) technique. Lowering shifting the intensity bands are observed increasing quantity glycerol as a plasticizer, confirming complexation between components. Ion transport parameters determined both methods EIS FTIR where found to be increased concentration. number measurement indicates that ions primary charge carrier conduction mechanism tion 0.961. maximum DC ionic conductivity value achieved 1.63 × 10−3 S cm−1. ESR values ranged from 300 580 Ω throughout 450 cycles. technique linear sweep voltammetry (LSV) electrochemical stability window 2 V for conducting samples. response cyclic (CV) an almost rectangular shape without Faradaic peaks. A galvanostatic charge–discharge investigation has shown initial specific capacitance, energy density, power density 133 F g−1, 18.3 Wh Kg−1, 680 W respectively.