Deformation and failure behaviors of anode in lithium-ion batteries: Model and mechanism

Performance Degradation of Lithium‐Ion Batteries with LiNi0.33Co0.33Mn0.33O2 Cathodes during Long‐Term, High‐Temperature Storage: Behaviors and Mechanism

“…As shown in Figure 1c, a large area of the anode material was peeled off from the cooper foil after a storage time of 240 h, which would lead to a significant increase of interface resistance . [21] This phenomenon corresponded well with the fast DCR rise within 240 h. As time extended, more and more anode material peeled off and the cooper foil was almost bare after 720 h. The anode material peeling off was probable due to the combination of 2 factors, namely the adhesive (SBR) failure and the continuous anode expansion in the long-period high temperature storage, which might be improved by optimizing high-quality binders in the graphite anode. On the contrary, the adhesion between the cathode material and aluminum foil was very stable and there was seldom cathode material peeled off after 720 h storage.…”

A universal anisotropic model for a lithium‐ion cylindrical cell validated under axial, lateral, and bending loads

“…Several other studies have focused on lateral properties of cells, while a few studied the deformations in an axial direction, and the three‐point bending, which are more practical and sensitive loading cases for cylindrical battery cells 11–20 ; some focused on dynamic loading with different strain rates 21–28 . Detailed model and representative volume element (RVE) were also popular topics for understanding the mechanism of the Li‐ion battery cell under different loading scenarios in microscale, including material properties and fracture mechanics 6,29–33 . Many studies have focused on characterizing the response of battery components such as individual layers of electrodes, separators, current collectors, or the active particle coating of the jellyroll 34–43 ; another topic was the modeling of the separator, where various failure criteria have been calibrated and validated 25,41,44,45 ; endcaps as protection of the battery against thermal runaway and explosion were also tested for the strength, as well as the maximum pressure to be tolerated 15,46 .…”

“…[21][22][23][24][25][26][27][28] Detailed model and representative volume element (RVE) were also popular topics for understanding the mechanism of the Li-ion battery cell under different loading scenarios in microscale, including material properties and fracture mechanics. 6,[29][30][31][32][33] Many studies have focused on characterizing the response of battery components such as individual layers of electrodes, separators, current collectors, or the active particle coating of the jellyroll [34][35][36][37][38][39][40][41][42][43] ; another topic was the modeling of the separator, where various failure criteria have been calibrated and validated 25,41,44,45 ; endcaps as protection of the battery against thermal runaway and explosion were also tested for the strength, as well as the maximum pressure to be tolerated. 15,46 The state of charge (SOC) was also mentioned to affect the performance of the battery under deformation.…”

Criteria and design guidance for lithium-ion battery safety from a material perspective

“…Furthermore, a series of mechanical loading tests on the battery components (cathode, anode, separator and battery case) were conducted to explore the mechanical properties and failure behavior for a better understanding of the ISC triggering mechanisms. 7,[15][16][17][18][19][20] Numerical computational modeling is considered an efficient methodology to describe ISC behaviors. Due to the simplicity of the modeling process, homogenized modeling methodology was rst used to describe the mechanical behaviors of the cells upon mechanical loading.…”