The Effect of Water on LiTFSI Salts To Its Conductivity

• Main Author: Hendharto Widdhiarta, Arnold
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/21257
• Institution: Institut Teknologi Bandung

Electrolyte is a crucial part of battery that highly affect smartphone’s performance. LiTFSI is a lithium salt that often used as electrolyte in battery. To study salts’s conductivity, the LiTFSI salts concentration is variated with water. The variation is done in 2 molal, 6 molal, and 10 molal. The solution is characterized by using EIS test in direct voltage 0 volt until 4 volts. Results shows that higher voltage gives higher conductivity value. Along with that, the highest conductivity value is shown by 2 molal sample. The charge carrier density and ionic mobility values are also can be found from the Nyquist curve. Equivalent circuit is used to fit the Nyquist curve to extract the capacitor and resistance value. The calculation also shows that charge carrier density and mobility have reverse relation. In the same voltage, high carrier density value gives low mobility value.