Determination of ionic conductivity of polymer electrolytes in li-ion batteries using electrochemical impedance spectroscopy

AbstractIn this work, we studied the graph of impedance spectroscopy of a solid polymer electrolyte at room temperature for lithium-ion batteries and its temperature dependence. When studying solid polymer electrolytes, Nyquist coordinates and electrochemical impedance spectroscopy were used. The ionic conductivity of the electrolyte was 6.39 · 10-6 1/OM·CM at 303 K and 1, 07 · 10-4 1/OM·CM at 373 K. Maximum conductivity electrolyte based on LiTf2 was 3, 075 · 10-5 1/OM·CM , which was achieved with a sample thickness of 0.033 cm.

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