About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage 2023
|
Presentation Title |
Apparent Microstructurally Induced Phase Separation in Porous LiNiMnCoO2 Cathodes
|
Author(s) |
Abhas Deva, Edwin Garcia |
On-Site Speaker (Planned) |
Edwin Garcia |
Abstract Scope |
A thermodynamically consistent phase field framework is presented to analyze the combined effects of internal grain microstructure and the particle size polydispersity on the microstructural mechanisms that control lithium transport and intercalation kinetics in porous LiNiMnCoO2 (NMC111) cathodes. The effects of Fickian, chemomechanical, and interfacial reaction driving forces are identified and summarized into simple dimensionless numbers and grouped into different regimes of behavior. Microstructurally, monodispersed and bimodal distributions are analyzed to identify the effects of grain boundaries, texture, particle size that result in the development of macroscopic populations of lithium distributions that may appear at first glance as two-phase in character, and highlight the possibility of simultaneously engineering the interior of the particle and the particle size distribution. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Modeling and Simulation, |