Modeling the Effect of the Loss of Cyclable Lithium on the Performance Degradation of a Lithium-Ion Battery

Dongcheul Lee, Boram Koo, Chee Burm Shin, So-Yeon Lee, Jinju Song, Il-Chan Jang and Jung-Je Woo
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Dongcheul Lee: Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, Suwon 16499, Korea
Boram Koo: Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, Suwon 16499, Korea
Chee Burm Shin: Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, Suwon 16499, Korea
So-Yeon Lee: Gwangju Bioenergy R & D Center, Korea Institute of Energy Research, Gwangju 61003, Korea
Jinju Song: Gwangju Bioenergy R & D Center, Korea Institute of Energy Research, Gwangju 61003, Korea
Il-Chan Jang: Gwangju Bioenergy R & D Center, Korea Institute of Energy Research, Gwangju 61003, Korea
Jung-Je Woo: Gwangju Bioenergy R & D Center, Korea Institute of Energy Research, Gwangju 61003, Korea

Energies, 2019, vol. 12, issue 22, 1-14

Abstract: This paper reports a modeling methodology to predict the effect of the loss of cyclable lithium of a lithium-ion battery (LIB) cell comprised of a LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathode, natural graphite anode, and an organic electrolyte on the discharge behavior. A one-dimensional model based on a finite element method is presented to calculate the discharge behaviors of an LIB cell during galvanostatic discharge for various levels of the loss of cyclable lithium. Modeling results for the variation of the cell voltage of the LIB cell are compared with experimental measurements during galvanostatic discharge at various discharge rates for three different levels of the loss of cyclable lithium to validate the model. The calculation results obtained from the model are in good agreement with the experimental measurements. On the basis of the validated modeling approach, the effects of the loss of cyclable lithium on the discharge capacity and available discharge power of the LIB cell are estimated. The modeling results exhibit strong dependencies of the discharge behavior of an LIB cell on the discharge C-rate and the loss of cyclable lithium.

Keywords: lithium-ion battery; modeling; cyclable lithium loss; performance degradation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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