A chemo-mechanical model coupled with thermal effect on the hollow core–shell electrodes in lithium-ion batteries
MetadataShow full item record
Electrode is a key component to remain durability and safety of lithium-ion (Li-ion) batteries. Li-ion insertion/removal and thermal expansion mismatch may induce high stress in electrode during charging and discharging processes. In this paper, we present a continuum model based on COMSOL Multiphysics software, which involves thermal, chemical and mechanical behaviors of electrodes. The results show that, because of diffusion-induced stress and thermal mismatch, the electrode geometry plays an important role in diffusion kinetics of Li-ions. A higher local compressive stress results in a lower Li-ion concentration and thus a lower capacity when a particle is embedded another, which is in agreement with experimental observations.
Showing items related by title, author, creator and subject.
Wandt, J.; Lee, Wade; Arrigan, Damien; Silvester, Debbie (2018)We report on the development of a very simple and robust reference electrode suitable for use in room temperature ionic liquids, that can be employed with planar devices. The reference electrode is based on LiFePO4(LFP), ...
Wang, D.; Wang, Y.; Zou, Y.; Lu, Chunsheng; Ma, Zengsheng (2018)© 2018 Springer-Verlag GmbH Austria, part of Springer Nature High-capacity active electrodes, such as Si anodes in Li-ion batteries, undergo a significant volume deformation of up to (Formula presented.) 400% during ...
Ma, Z.; Wu, H.; Wang, Y.; Pan, Y.; Lu, Chunsheng (2017)Lithium-ion batteries (LIBs) in space or extreme environments may suffer irradiation and during operation, it is difficult to obtain the intrinsic mechanical properties of electrode materials due to coexistence of ...