biostudies-literatureAdam AAThe Deanship of Scientific Research at Imam Mohammad Ibn Saud Islamic University Research GroupThe Deanship of Scientific Research at Imam Mohammad Ibn Saud Islamic University3055https://www.ebi.ac.uk/biostudies/studies/S-EPMC9370478biostudies-literatureUnknown14(15)In this research, innovative green and sustainable solid polymer electrolytes (SPEs) based on plasticized methylcellulose/polyvinyl pyrrolidone/potassium carbonate (MC/PVP/K₂CO₃) were examined. The MC/PVP/K₂CO₃ SPE system with five distinct ethylene carbonate (EC) concentrations as a plasticizer was successfully designed. Frequency-dependent conductivity plots were used to investigate the conduction mechanism of the SPEs. Electrochemical potential window stability and the cation transfer number of the SPEs were studied via linear sweep voltammetry (LSV) and transference number measurement (TNM), respectively. Additionally, the structural behavior of the SPEs was analyzed using Fourier transform infrared spectroscopy (FTIR), field emission scanninPolymersInnovative Methylcellulose-Polyvinyl Pyrrolidone-Based Solid Polymer Electrolytes Impregnated with Potassium Salt: Ion Conduction and Thermal Properties.PMC9370478Research Group no. RG-21-09-48RG-21-09-48Ibnaouf KHAdam AAIbrahem MASoleimani HShukur MFBADennis JOAldaghri OABashir Abdulkadir AAli MKMAbdel All NFMfalseInnovative Methylcellulose-Polyvinyl Pyrrolidone-Based Solid Polymer Electrolytes Impregnated with Potassium Salt: Ion Conduction and Thermal Properties.In this research, innovative green and sustainable solid polymer electrolytes (SPEs) based on plasticized methylcellulose/polyvinyl pyrrolidone/potassium carbonate (MC/PVP/K₂CO₃) were examined. The MC/PVP/K₂CO₃ SPE system with five distinct ethylene carbonate (EC) concentrations as a plasticizer was successfully designed. Frequency-dependent conductivity plots were used to investigate the conduction mechanism of the SPEs. Electrochemical potential window stability and the cation transfer number of the SPEs were studied via linear sweep voltammetry (LSV) and transference number measurement (TNM), respectively. Additionally, the structural behavior of the SPEs was analyzed using Fourier transform infrared spectroscopy (FTIR), field emission scannin2022-01-01T00:00:00Z2022 Jul2026-06-18T03:18:25.989Z2025-02-19T03:32:32.669ZS-EPMC93704783595657010.3390/polym14153055