Modeling the effect of acid attack on the capacity fading in lithium-ion batteries during cycling

Jha, Vikalp ORCID: https://orcid.org/0000-0001-8279-9626 and Krishnamurthy, Balaji 2022. Modeling the effect of acid attack on the capacity fading in lithium-ion batteries during cycling. Ionics 28 (5) , pp. 2247-2257. 10.1007/s11581-022-04457-y

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Abstract

A numerical model is developed to analyse the effect of hydrogen fluoride (acid) formation on the SEI film (solid electrolyte interphase) on capacity loss in a Li-ion battery under charge–discharge load cycles. Solvent (ethylene carbonate) reaction at the negative electrode/SEI interphase forms Li2CO3 which is the main component of the solid electrolyte interphase. The SEI layer is presumed to dissolve as a result of the formation of the hydrogen fluoride (HF) at the SEI layer and electrolyte interphase. Simulation results indicate that formation and dissolution reaction rate constant of the solid electrolyte interphase directly affect the capacity loss in a Li-ion battery. The potential drop across SEI film is found to be directly related to the rate constants of formation and dissolution reactions. Simulation outcomes are well compared with experimental data. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Springer Verlag (Germany)
ISSN:	0947-7047
Date of Acceptance:	13 February 2022
Last Modified:	30 Jan 2024 11:30
URI:	https://orca.cardiff.ac.uk/id/eprint/165787

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