However, improper plating and stripping are susceptible to forming lithium dendrites and dead lithium, causing battery capacity degradation. During the full cycle of plating and stripping, mechanical stress intertwines with electrochemical transfer and reactions. The mechanism of pressure effects in plating and stripping behavior remains ambiguous.
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.
Simulation results show the typical features of the “stripping-plateau”, which is often observed during discharge after Li plating occurrs. Moreover, a similar feature is observed at the onset of Li plating, which can serve as an indicator for lithium plating in lithium ion batteries during charging, for example, of electric vehicles.
It is also important to describe the altered voltage behavior due to the lithium dissolution, the so-called lithium stripping, during a subsequent discharge or rest period. There are some models for lithium plating, but only a few models the backward reaction of lithium stripping.
Lithium plating and stripping are side reactions occurring on the surface of the negative electrode. The reactions of plating and stripping can be written in the following way: (1) Li + + e − ⇄ Li 0 The forward reaction describes lithium plating and the backward reaction lithium stripping.
Therefore, diffusion dynamics is the main approach, through which temperature affects the battery performance during the stripping process. However, direct observation of diffusion process is almost impossible in experiments.