Lithium metal is an excellent material for the anode in batteries, due to its low electrochemical potential and high theoretical capacity. Due to its reactivity and dendrite growth, lithium metal is still not suitable for use in commercial batteries. One of the more effective ways to protect electrodes is a thin coating based on a cellulose derivate. As part of the thesis work thesis, we used electrochemical impedance spectroscopy to determine how such coating affects the aging of lithium electrodes. The cells were aged for 1, 3 and 5 days at 40 °C, 50 °C and 60 °C, then their impedance spectra were measured.
|