THE EFFECT OF BIOPOLYMER CHITOSAN ADDITION IN ELECTRICAL CONDUCTIVITY OF SODIUM ION CATHODE WITH SOL-GEL METHOD

• Main Author: Azizah (NIM : 13313073), Anisa
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/25625
• Institution: Institut Teknologi Bandung

Limited resourses of lithium triggered research on alternative energy storage beside litium ion battery. Sodium ion battery that made of abundant sodium material is a promising solution. Research on sodium ion battery is still ongoing, though the method being used is quite complicated and hard to do. The conductivity of sodium ion battery is also still below its competitor. In this research, cathode of sodium ion battery is synthetize using simple sol-gel method with addition of chitosan as binder to increase its conductivity. <br /> <br /> NaFePO4 is synthetize using sol-gel method with NaCl, (NH4)2HPO4, and Fe(NO3)3.9H2O as precursor and then calcinated at 600oC (based on analysis of Thermogravimetric-Differential Thermal Analyzer (TG-DTA)). Characterization of this compound is done using X-ray Diffraction (XRD). Conductive material, graphite, is added to the compound with 3% concentration. The effect of organic binder chitosan addition to NaFePO4 conductivity was tested by adding various concentration of chitosan, 2%, 4%, 6%, 8%, dan 10%. Conductivity is tested by multimeter and further characterization is done by Scanning Elektron Microscopy (SEM). <br /> <br /> Na3Fe2(PO4)3 was synthetized using sol-gel method at 600oC. Optimum increase of conductivity was shown in the variation of 4% concentration of chitosan, 4,52x10-8 S/cm in sample without addition of conductive material, and 2,77x10-8 S/cm in sample with addition of conductive material graphite in 3% concentration.