Andreas Mertens

 

TDM enhanced Electrochemical Impedance Spectroscopy for the investigation of Lithium- Ion batteries

Nyquist plot of impedance data obtained via EIS from a commercial Lithium-Ion battery Copyright: A. Mertens

Despite of substantial progresses in recent years, full potential of the Li-Ion technology has not been exploited. One of the most urgent challenges at the moment is to extend the lifetime of the battery cell.

As a task related to the currently conducted master project, kinetic processes of Li-Ion batteries will be investigated by Electrochemical Impedance Spectroscopy (EIS). Due to the ability of EIS to distinguish between different molecular level processes, repeated measurements under varying operation conditions may deepen the understanding of the main kinetic processes occurring in Li-Ion batteries.