期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 156, 期 3, 页码 A145-A153出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3043429
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- E.U.
An isothermal, multimodal, physics-based aging model for life prediction of Li-ion batteries is developed, for which a solvent decomposition reaction leading to the growth of a solid electrolyte interphase (SEI) at the carbonaceous anode material is considered as the source of capacity fade. The rate of SEI film growth depends on both solvent diffusion through the SEI film and solvent-reduction kinetics at the carbon surface. The model is able to simulate a wide variety of battery aging profiles. e.g., open-circuit and constant-voltage storage, charge/discharge cycling. etc. An analysis of capacity-fade data from the literature reveals that the same set of aging parameters may be used for predicting cycling and constant-voltage storage. The use of this set of parameters for predicting storage under open-circuit voltage points out that part of the self-discharge is reversible. (C) 2008 The Electrochemical Society.
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