Abstract
In this study, we present a physicochemical model considering both lithium plating and lithium stripping side reactions in lithium-ion batteries. The model shows the amount of reversibly plated lithium dependent on the charging current on the surface of the graphite anode. In the subsequent discharge, a characteristic voltage plateau due to lithium stripping is simulated. The shape of the voltage plateau corresponds to the amount of previously plated lithium. The model correlates with experimental data of a commercial 18650-type NMC/C cell. The simulated amount of plated lithium is in the same range as in a previous neutron diffraction study with the same cell type. To induce lithium plating, the cells are charged with various C-rates at an ambient temperature of 0 °C. The measured voltage plateau caused by lithium stripping in the discharge is correctly described by simulation.
Original language | English |
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Pages (from-to) | 41-47 |
Number of pages | 7 |
Journal | Journal of Power Sources |
Volume | 414 |
DOIs | |
State | Published - 28 Feb 2019 |
Keywords
- Graphite anode
- Lithium plating
- Lithium stripping
- Lithium-ion battery
- Physicochemical modeling
- Voltage plateau