Toggle Main Menu Toggle Search

Open Access padlockePrints

Impact of Solid-Electrolyte Interphase Layer Thickness on Lithium-Ion Battery Cell Surface Temperature

Lookup NU author(s): Ignas Andriunas, Dr Zoran Milojevic, Dr Neal WadeORCiD, Dr Prodip DasORCiD



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


The widely used non-destructive battery characterization techniques, such as voltage, capacity, and impedance measurements, often fail to fully characterise a discarded lithium-ion battery when reuse of spent battery is envisaged. Here we propose a tool that uses the surface temperature of a pouch cell to measure the thickness of the solid-electrolyte-interphase (SEI) layer, which is often attributed as one of the main causes of lithium-ion battery degradation at 0.1C to 1C discharge rates in ambient conditions. A 2D multiphysics coupled electrochemical-thermal continuum model and a 3D thermal model have been developed to investigate the changes in the surface temperature of a lithium-ion pouch cell with varying SEI layer thicknesses. Present modelling results show that the cell surface temperature changes due to significant SEI layer heat generation at several discharge rates. Furthermore, the temperature change has also been subject to different cooling conditions and particle sizes. The present results provide a reference to making decisions on battery reuse by providing a correlation between the SEI layer thickness with the surface temperature of the cell and inform future research on thermal runaway as a thicker SEI layer can decrease the onset temperature of thermal runaway.

Publication metadata

Author(s): Andriunas I, Milojevic Z, Wade N, Das PK

Publication type: Article

Publication status: Published

Journal: Journal of Power Sources

Year: 2022

Volume: 525

Print publication date: 30/03/2022

Online publication date: 10/02/2022

Acceptance date: 03/02/2022

Date deposited: 03/02/2022

ISSN (print): 0378-7753

ISSN (electronic): 1873-2755

Publisher: Elsevier BV


DOI: 10.1016/j.jpowsour.2022.231126

ePrints DOI: 10.57711/eq81-1p70


Altmetrics provided by Altmetric


Funder referenceFunder name