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Capacity fade modelling of lithium-ion battery under cyclic loading conditions
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Rajan, Ashwin T., Chung, Yongmann M. and Wang, Jihong (2016) Capacity fade modelling of lithium-ion battery under cyclic loading conditions. Journal of Power Sources, 328 . pp. 586-598. doi:10.1016/j.jpowsour.2016.08.054 ISSN 0378-7753.
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Official URL: http://dx.doi.org/10.1016/j.jpowsour.2016.08.054
Abstract
A pseudo two-dimensional (P2D) electro-chemical lithium-ion battery model is presented in this paper to study the capacity fade under cyclic charge-discharge conditions. The Newman model [1,2] has been modified to include a continuous solvent reduction reaction responsible for the capacity fade and power fade. The temperature variation inside the cell is accurately predicted using a distributed thermal model coupled with the internal chemical heat generation. The model is further improved by linking the porosity variation with the electrolyte partial molar concentration, thereby proving a stronger coupling between the battery performance and the chemical properties of electrolyte. The solid electrolyte interface (SEI) layer growth is estimated for different cut-off voltages and charging current rates. The results show that the convective heat transfer coefficient as well as the porosity variation influences the SEI layer growth and the battery life significantly. The choice of an electrolyte decides the conductivity and partial molar concentration, which is found to have a strong influence on the capacity fade of the battery. The present battery model integrates all essential electro-chemical processes inside a lithium-ion battery under a strong implicit algorithm, proving a useful tool for computationally fast battery monitoring system.
Item Type: | Journal Article | ||||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||
Library of Congress Subject Headings (LCSH): | Lithium ion batteries, Electrochemistry | ||||||||||
Journal or Publication Title: | Journal of Power Sources | ||||||||||
Publisher: | Elsevier S.A. | ||||||||||
ISSN: | 0378-7753 | ||||||||||
Official Date: | 1 October 2016 | ||||||||||
Dates: |
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Volume: | 328 | ||||||||||
Page Range: | pp. 586-598 | ||||||||||
DOI: | 10.1016/j.jpowsour.2016.08.054 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Date of first compliant deposit: | 27 October 2016 | ||||||||||
Date of first compliant Open Access: | 25 August 2017 | ||||||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||||||||
Grant number: | EP/L001004/1 |
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