| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2025
|
| Presentation Title |
Exploring Electrodeposition Kinetics in Magnesium Metal Anodes |
| Author(s) |
Vahid Attari, Sarbajit Banerjee, Raymundo Arroyave |
| On-Site Speaker (Planned) |
Vahid Attari |
| Abstract Scope |
Magnesium (Mg) metal batteries hold promise for next-generation energy storage due to Mg’s abundance and potential for improved energy densities through two-electron redox in cathodes and thin film anodes supporting high current densities. However, challenges persist in achieving reversible and uniform electrodeposition of Mg, largely due to energy barriers to desolvation in liquid electrolytes, stabilization of passivation layers that impede Mg diffusion, and high-asperity electrodeposition morphologies. This study examines the effects of overpotential time-transients and electrolyte concentration using experimentally-guided phase-field methods, comparing results with an electrochemical spherical cap model. We find the Damkohler number converges to approximately one for a symmetric Mg-Mg cell using 0.1 M Mg[TFSI] in 1:1 v/v diglyme/dimethoxyethane, suggesting a balance between reactive and diffusive forces. Our results indicate dendritic structures are driven by electrolyte transport limitations and underscore the critical role of overpotentials in reaction kinetics and non-equilibrium growth dynamics during metal electrodeposition. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Magnesium, Computational Materials Science & Engineering |