Electrochemical impedance spectroscopy analysis for lithium-ion battery using Li4Ti5O12 anode

► The impedance of LIB with LTO anode was interpreted by a proposed equivalent circuit. ► The cathode with two sets of different parameters was considered. ► The fitting results at different SOC or temperature are consistent with previous report. ► The capacity fade due to cycling is mainly caused by degradation of the cathode. ► The cyclability of this LIB was improved by using a LTO anode instead of graphite anode.