Modeling the Effect of Acid Attack on the Capacity Fading in Lithium Ion Batteries

A mathematical model is developed to study the effect of acid attack on the Solid Electrolyte interphase (SEI layer) on the capacity fading in a lithium ion battery under conditions of storage. The model assumes that the solvent reaction at the electrode/SEI interphase is the rate limiting step in t...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 2016-01, Vol.163 (7), p.A1214-A1218
Main Authors: Singhvi, Rohan, Nagpal, Rohit, Krishnamurthy, Balaji
Format: Article
Language:English
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Summary:A mathematical model is developed to study the effect of acid attack on the Solid Electrolyte interphase (SEI layer) on the capacity fading in a lithium ion battery under conditions of storage. The model assumes that the solvent reaction at the electrode/SEI interphase is the rate limiting step in the formation of the SEI layer. The SEI layer is assumed to dissolve due to the attack of the hydrofluoric acid species (HF) at the SEI/electrolyte interphase. The model assumes that the net loss of lithium ions in the film formation reaction is proportional to the capacity fading in the battery. Model results are compared with experimental data and are found to compare well with experimental data.
ISSN:0013-4651
1945-7111
DOI:10.1149/2.0601607jes