A mathematical model for the capacity fade of a LiMn2O4 (LMO) electrode is developed in this paper by including the acid attack on the active material and the solid electrolyte interphase (SEI) film formation on the LMO particle surface. The acid generated by the LiPF6 and the solvent decompositions are coupled to the manganese (Mn) dissolution. The decrease of the Li ion diffusion coefficient is involved as another contribution to the capacity fade, which is caused by the passive film formation on the active material surface. The effects of cell practical operation/fabrication conditions and kinetics of side reactions on battery life are also investigated by utilizing the developed mathematical model.
Published in Journal of the Electrochemical Society, Volume 160, Issue 1, 2013, pages A182-A190.
© The Electrochemical Society, Inc. 2013. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in
Dai, Y., Cai, L., & White, R. E. (2013). Capacity Fade Model for Spinel LiMn2O4 Electrode. Journal of The Electrochemical Society, 160 (1), A182 – A190
Publisher’s Version: http://dx.doi.org/10.1149/2.026302jes