An evaluation of solid-state electrolyte based on pectin and lithium bis (trifluoromethanesulphonyl)imide for lithium-ion batteries

Abstract

Abstract In this era, surviving Li-ion batteries is power-driven by various solid electrolytes, focusing majorly on lithium polymer electrolytes. A huge challenge in finding an electrolyte with the highest and stable ionic conductivity is on the process. In this connection, the present study aims in preparing a solid electrolyte using lithium bis(trifluoromethanesulphonyl)imide (LiTFSI) doped in host Pectin (biopolymer) by solution casting technique. The prepared solid polymer electrolyte was characterized using XRD, FT-IR Spectrophotometer, TG/DTA, and 3D Optical Laser Profilometry techniques. The ionic conductivity was determined using an AC Impedance spectroscopy. The results obtained revealed the interaction between the polymer and the LiTFSI. The electrolyte was found to be amorphous and the optical profilometry showed the average roughness which was stable at elevated temperatures. The conductivity of the electrolyte was found to be at a higher order. Thus, the prepared solid polymer electrolyte system may be suitable for greater energy outputs with improved safety.