Research profile

Identification of the Lithium-ion battery aging mechanism to evaluate the SOH for NCM battery. This research mainly aims to combine the electrochemical performance-degradation of cathode, anode, and electrolyte with empirical fitting to identify the main aging mechanisms of batteries used in electric vehicles (EVs). Firstly, the capacity loss and the electrode aging mechanisms in Nickel Manganese Cobalt (NMC)-based Li-ion batteries will be researched by performing conventional postmortem analyses on previously aged battery cells. Secondly, a novel non-destructive approach based on the incremental capacity analysis (ICA) technique will be proposed for estimating the capacity fade and state-of-health (SOH) of the battery. Finally, these results will be linked to each other and a comprehensive electrochemistry model will be introduced for estimating the irreversible capacity loss of NMC-based Li-ion batteries.