Electrical characterisation techniques for Li-ion battery degradation analysis and state of health estimation

Abstract

The aim of this paper is to introduce incremental capacity analysis (ICA) as non-destructive electrical technique for degradation analysis and estimation of the state-of-health (SOH) of Lithium-ion batteries. Commercial Li-ion NCA-based batteries were degraded by various stress cycling including High-Current Charging, Over-Charging, and Under-Charging to examine the SOH estimation reliability and accuracy provided by ICA. The advantage of the proposed ICA technique for SOH estimation is compared to impedance spectroscopy.