Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7170447 | European Journal of Mechanics - A/Solids | 2014 | 9 Pages |
Abstract
Lithium manganese oxide spinel, like many other electrode materials of lithium ion batteries shows phase changes during intercalation. In this paper we investigate the modeling of this phenomenon using the Cahn-Hilliard equation coupled to elasticity by means of a thermomechanical analogy. The finite and small deformation formulation of these theories are compared by means of simulations of electrode particles of lithium manganese oxide spinel. In particular, variations of the material constants are discussed. Furthermore, we investigate the identification of Gurtin's external microforce according to recent work by Anand (2012). We show that this means a significant change of the theory as compared to the classical formulation, the details of which are discussed by means of simulations.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Ann-Christin Walk, Magalie Huttin, Marc Kamlah,