Impedance Spectroscopy for Detecting Phase Transitions in KBr
Team members
Laphas Precmcharoen, Song Runlin, Gao Jia
Introduction
This project aims to study the electrical properties of Potassium Bromide (KBr) using impedance spectroscopy.
Materials
1. Electrochemical Impedance Spectroscopy (EIS) System
2. KBr samples
3. Two-electrode system
4. Frequency generator
Procedure
Palletizing and Silver painting KBr
Impedance spectroscopy of KBr across different temperture
Results and Discussions
Conclusion
Timeline
| 5/3 | Learn how to do the Impedance spectrocopy and how to palletize samples | |
| 7/3 | Palletize powdered KBr | |
| 12/3 | Patelletize KBr into different thicknesses | |
| 14/3 | Silver paint both sides of the pallets | |
| 19/3 | 1st attempt on the impedance spectroscopy across different temperatures | |
| 20/3 | final attempt on the impedance spectroscopy across different temperature from 50C - 255C of the pallet with diameter 11.4 mm and thickness 2.61 mm | |
| 21/3 | Do the impedance spectroscopy while applying bias DC voltage from 0V to 5V of the pallet with diameter 11.7 mm and thickness 3.54 mm and do the impedance spectroscopy on the pallets with different thicknesses | |
| 26/3 | Fit the nyquist plot of the temperature data with a semi circle to get approximated resistance and capacitance | |
| 2/4 | Discuss the result and fit the DC dependent data with semi circle | |
| 4/4 | Analyze the data and discuss | |
| 9/4 | Discuss the possible mechanism of phase transition and updating wiki page |