About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage 2023
|
Presentation Title |
Mitigate Plating in Graphite Using Electrode Microstructure Simulations |
Author(s) |
Affan Malik, Hui-Chia Yu |
On-Site Speaker (Planned) |
Affan Malik |
Abstract Scope |
Li-ion batteries are currently the dominant energy storage devices in our daily life applications, wherein graphite is the most common anode material. However, it suffers from Li plating at high charging rates. This work presents complex microstructure-level simulations of Li intercalation to graphite electrodes, in which the Cahn-Hilliard equation was employed to model the phase transition processes. The Gibbs free energy of lithium in graphite was parameterized from literature data for the phase-field simulations. Those simulations were used to investigate different means of electrode engineering to mitigate or delay the onset of plating. First, we simulated thick graphite electrodes with embedded tunnels, vastly increasing the total energy capacity. Various lithiation protocols were also designed to prevent plating. Lastly, hybrid electrodes with mixtures of different anode materials were examined in the simulations to mitigate plating. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Modeling and Simulation, Phase Transformations |