Modelling of Solid-State Battery Electrolyte Stress Due to Electrode Expansion During Electrochemical Cycling Samuel Rahardian (1*), Bentang Arief Budiman (1,2), Poetro Lebdo Sambegoro (1,2), Rakshidatu Lestaluhu (1)
1) Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung,
Jalan Ganesha No. 10, Bandung, Indonesia
2) National Center for Sustainable Transportation Technology, Institut Teknologi Bandung,
Jalan Ganesha No. 10, Bandung, Indonesia
*samuelrahardian[at]students.itb.ac.id
Abstract
In battery cell, during charge-discharge process, battery electrodes expand or shrink due to lithium ion insertion. In liquid electrolyte battery, electrode expansion was not critical because the volume could change freely in liquid system. However, in solid-state battery, solid electrolyte holds the volume change in the electrode resulted in stress build-up. In this paper, Anode and Cathode Active Material expansion during lithiation/delithiation process was modeled. Expansion model was used to find stress build-up in several solid-state battery cell configuration. Stress simulation result provide information to minimize solid-state battery damage and predict best configuration for solid-state battery electrode and electrolyte.
