POLYMER ELECTROLYTE MEMBRANE BASED ON CHITOSANPOLYVINYL ALCOHOL FOR LITHIUM POLYMER BATTERY

• Main Author: LUH PUTU ANANDA SARASWATI (NIM : 10513051), NI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/29643
• Institution: Institut Teknologi Bandung

<p align="justify">Lithium battery is a commercial battery that is currently widely produced due to its high energy capacity, longer life time, and efficient use, making it suitable for many electronic devices. Unfortunately, the use of liquid electrolyte in lithium ion batteries is particularly vulnerable to leakage, corrosive, and flammable when charging batteries at high temperatures. To solve this problem, various research trends evolved, including research on polymer electrolyte membranes in lieu of liquid electrolytes on lithium ion batteries. Indonesia is an archipelagic country rich in seafood, so high consumption of it can leave a huge pile of waste. One of the waste groups is shrimp shell that contains a lot of chitin compounds. Further processing of chitin produces chitosan that has great potential to be a major component in the preparation of the polymer electrolyte membrane. To improve the quality of chitosan-based membranes, particularly their ionic conductivity property, the blending of chitosan with polyvinyl alcohol (PVA) and LiClO4 was performed. The results show that the polymer electrolyte membrane prepared by blending chitosan, PVA, and LiClO4 has a higher ionic conductivity and mechanical strength rather than a pure chitosan membrane. A maximum ionic conductivity about 4.57 x 10-3 S cm-1 was produced from membrane with 70% chitosan-PVA (90:10) and 30% LiClO4. The increased of ionic conductivity of the blending membrane is due to the increasing number both of the amount and mobility of lithium ion in the membrane as a result of the addition of PVA and LiClO4. This result also supported by mechanical data analysis, surface morphology, and thermal data analysis.<p align="justify">