A Review on Modeling of Chemo-mechanical Behavior of Particle–Binder Systems in Lithium-Ion Batteries
Noman Iqbal, Jinwoong Choi, Changkyu Lee, Asif Khan, Muhammad Tanveer, Seung Jun Lee
Abstract
Chemo-mechanical modeling of lithium-ion batteries is essential to achieve mechanical stability of the electrode. Tremendous efforts have been devoted to address underlying mechanisms of mechanical degradation caused by diffusion-induced stress and its effects on battery performance. Although the binder is an electrochemically inactive component of the electrode, it can play a crucial role in the development of diffusion-induced stress of the active particle network by regulating the electronic conduction pathways. Therefore, it is important to include binders in modeling of lithium-ion batteries for comprehensive understanding of the chemo-mechanical behavior of the composite electrode. In this review, we summarize the existing modeling techniques and their practical applicability to investigate the chemo-mechanical response of the particle–binder systems. First, we highlight the general models describing chemo-mechanical behavior of diffusion-induced stress in lithium-ion batteries. Next, we underline the single particle, multi-particle and pseudo-two-dimensional representative volume element models that include the binders. Finally, we provide suggestions for the computational approach to bridge the gap between the simulations and their applications.