Verification of the Modified Degradation Mode Identification Technique by Employing Electrochemical Impedance Spectroscopy and Differential Voltage Analysis

For retired automotive lithium-ion batteries, state of health (SoH) is currently utilised to grade them for a second-life application. However, researchers previously challenged this and expressed that, in addition SoH, the actual degradation mechanism, also known as mode (DM), should be considered grading, efficient operation. To date, there little evidence support this. A validated DM detection technique cell/module grading does not exist. modified by tracking indexing incremental capacity (IC) curves was proposed authors; nevertheless, it difficult validate. Researchers identification using Electrochemical Impedance Spectroscopy (EIS) Differential Voltage (DV) analysis. With direct comparison techniques made exploiting IC, DV, EIS, correlation can made, which presented article. The suggests that cells identified having same (or different) growth EIS other researchers. Likewise, DV analysis peak’s standard deviation similar smaller than different cells.