Synthesis of Polymer Electrolyte From Coconut Fiber Cellulose Acetate for Lithium Ion Battery Application

• Main Author: KASIDI (NIM 10505086), DAVID
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/11964
• Institution: Institut Teknologi Bandung

Nowadays, Lithium ion battery has become one of the largest commodity in the world. Indonesia is one of the biggest coconut producer in the world, so we can see easily many coconut fiber waste surrounded our environment. In this research, coconut fiber has used to become a source material for cellulose acetate and then we made polymer electrolyte by mixing cellulose acetate with various concentration of lithium salt. To know the characteristic of polymer electrolyte, which has doped with lithium salt, we characterized this material with FTIR (Fourier Transform Infrared) instrument to analyze functional groups, EIS (Electrochemical Impedance Spectroscopy) to analyze conductivity, optical microscope and X-Ray diffraction to analyze morphology of this mixture, DTA/TGA(Differential Thermal Analysis/Thermo Gravimetric Analysis) to analyze thermal stability, and tensile tester to know the mechanical strength of this polymer electrolyte. The result from this experiment showed that the presence of lithium salt in cellulose acetate has increased rigidity and conductivity of this material, but decreased in the thermal stability.