MANUFACTURE OF LITHIUM-ION BATTERY SEPARATOR BASED ON PVA/CHITIN/ZIRCONIUM SILICATE NANOFIBER USING ELECTROSPINNING METHOD

• Main Author: Hikam, Muhammad
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik sipil
• Online Access: https://digilib.itb.ac.id/gdl/view/65530
• Institution: Institut Teknologi Bandung

Separator is an important component in lithium-ion batteries. Separator serves as a transfer medium for electrolyte ions as well as preventing internal short circuits between the electrodes. Commercial separators consisting of synthetic polymer like PE and PP, have poor thermal resistance, poor electrolyte wettability, and poor biodegradability. Chitin used as raw material for separator because of its abundant resources, high crystallinity, biodegradability, and biocompatibility. However, chitin is difficult to process during electrospinning to form a membrane because of its insolubility in water and most organic solvents, so it needs to be mixed with PVA which is environmental friendly, flexible, and easy to process. The addition of zirconium silicate nanoparticles is intended to increase thermal stability of the separator membrane. The PVA/chitin/zirconium silicate nanofiber membrane was successfully fabricated using an electrospinning with voltage parameters of 23.5 kV, a flow rate of 1 mL/hours, and a nozzle distance of 15 cm. PVA/chitin/zirconium silicate nanofiber membrane has a 61% higher porosity percentage, 77% less shrinkage percentage compared with commercial separator Celgard 2400. Nevertheless, the optimization of electrospinning parameters of PVA/chitin/zirconium silicate nanofiber membrane is required to further research to improve its quality and properties.