Heterogeneous Lithium-Ion Battery
Application ID: 33591
This model describes the behavior of a lithium-ion battery unit cell modeled using an idealized heterogeneous three-dimensional geometry.
In contrast to the typical homogenized approach for describing porous electrodes, heterogeneous models define the actual shapes of the electrode particles.
The model includes electrolyte ion transport, electrode kinetics and diffusion of lithium atoms in the solid electrode particles. On the negative side, the electrode consists of a blend of graphite and silicon.
The second part of the tutorial explores the impact on the charging voltage characteristics when introducing structural mechanics to the model, including fully-coupled geometry deformation due to lithium intercalation strain.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
- COMSOL Multiphysics® and
- Battery Design Module and
- either the Geomechanics Module, or Nonlinear Structural Materials Module and
- either the MEMS Module, or Structural Mechanics Module
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Tabella delle Funzionalità and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.