Electrochemical impedance spectroscopy (EIS) is a useful diagnostics technique for lithium-ion batteries but measurements can last several hours. Fast pulse impedance spectroscopy (PIS) is thus proposed using just 2 minutes of pulse perturbation data and classic signal processing techniques. The method is verified using experimental data collected from 6 lithium-ion cells aged under different temperatures and charging levels. Results show that PIS can extract high-quality Nyquist plots for overpotential analysis. Comparison is made between the frequency- and time-domains using the Randles and convolution-defined diffusion equivalent circuit models. PIS is a practical time-domain impedance spectroscopy method that experimentally links EIS and convolution-defined diffusion.
Fast Time-domain Impedance Spectroscopy of Lithium-ion Batteries using Pulse Perturbation
2022-06-15
5366153 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Electrochemical Impedance Spectroscopy on ageing Lithium-ion Batteries
TIBKAT | 2021
|Thermal impedance spectroscopy for Li-ion batteries using heat-pulse response analysis
Online Contents | 2002
|Characterizing capacity loss of lithium oxygen batteries by impedance spectroscopy
Online Contents | 2010
|Two- and three-electrode impedance spectroscopy of lithium-ion batteries
Online Contents | 2003
|