Publication in the Journal Electrochimica Acta

Title of the publication: "Investigation of the diffusion phenomena in lithium-ion batteries with distribution of relaxation times".

This publication investigated the distribution of relaxation times (DRT) spectra for the Lithium-ion batteries based on a physico-chemical impedance model. The developed theory enables the estimation of the solid and liquid diffusion coefficients in the LIBs by considering the particle geometry and the particle size distribution. A commercial cell was used for the experiment and the estimation results were compared with that of the GITT method. The results indicate that the DRT method can effectively estimate the solid diffusion parameters and exclude the influence of the electrolytic diffusion.

link to the article: https://doi.org/10.1016/j.electacta.2022.141174