Version 1
: Received: 1 November 2021 / Approved: 3 November 2021 / Online: 3 November 2021 (08:07:05 CET)
How to cite:
Mahmoudy, S.A.; Haftbaradaran, H. An Investigation of Surface Stress on the Fracture Mechanics Behavior of Classical and Phase-Separating Planar Electrodes. Preprints2021, 2021110060. https://doi.org/10.20944/preprints202111.0060.v1
Mahmoudy, S.A.; Haftbaradaran, H. An Investigation of Surface Stress on the Fracture Mechanics Behavior of Classical and Phase-Separating Planar Electrodes. Preprints 2021, 2021110060. https://doi.org/10.20944/preprints202111.0060.v1
Mahmoudy, S.A.; Haftbaradaran, H. An Investigation of Surface Stress on the Fracture Mechanics Behavior of Classical and Phase-Separating Planar Electrodes. Preprints2021, 2021110060. https://doi.org/10.20944/preprints202111.0060.v1
APA Style
Mahmoudy, S.A., & Haftbaradaran, H. (2021). An Investigation of Surface Stress on the Fracture Mechanics Behavior of Classical and Phase-Separating Planar Electrodes. Preprints. https://doi.org/10.20944/preprints202111.0060.v1
Chicago/Turabian Style
Mahmoudy, S.A. and Hamed Haftbaradaran. 2021 "An Investigation of Surface Stress on the Fracture Mechanics Behavior of Classical and Phase-Separating Planar Electrodes" Preprints. https://doi.org/10.20944/preprints202111.0060.v1
Abstract
Although lithium-ion batteries have extensively been used in various applications because of their high energy capacity, fracture and failure, the by-products of large strains and stresses caused by fast charging and discharging need yet to be addressed. The size effects on the mechanical behavior of the nano-sized structures are significant; however, the classical elasticity theory may not consider such effects. On the other hand, surface stress theory, as a robust and potential theory, is suitable in considering size effects in nano-scale structures. Therefore, in this paper, in order to involve the surface stress effects on the fracture behavior of Li-ion batteries, the following steps are taken. Firstly, a phase-field model is used to determine the evolution of the concentration profile. Subsequently, the stress distribution is obtained by using the surface stress theory combined with chemical equations for a planar electrode. Afterward, by using the weight function method for an edge crack in the plate, the stress intensity factor is derived for all time steps and possible crack lengths during the process. It is found that with increasing phase boundary thickness parameter or decreasing phase-separation phenomenon, the surface mechanics parameters become more influential. Furthermore, in the presence of positive surface stress, the diffusion-induced stress distribution decreases, which in turn reduces the stress intensity factor. In addition, in this paper, the two states of surface stress are compared either for elastic or total strain. Concerning stresses and concentrations, the results indicate a big difference at the beginning of the deintercalation process showing, in particular, 2% for stresses, but the differences diminish gradually.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
