About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Discovery and Design of Materials
|
Presentation Title |
Impacts of Oxygen Doping on Sodium-ion Diffusion in Solid-state Batteries with Glassy Electrolyte: A Molecular Dynamics Perspective |
Author(s) |
Kun Luo, Qi An |
On-Site Speaker (Planned) |
Qi An |
Abstract Scope |
As the demand for sustainable energy escalates in societal production and daily life, the innovation of high-performance battery technologies has become a vital frontier in modern technology. In this talk, we discuss the atomic-level mechanisms that enhance the performance of sodium-ion solid-state batteries via oxygen doping in Na3PS3O solid electrolytes. Utilizing machine learning force field (ML-FF) molecular dynamics simulations, we modeled sodium-ion diffusion in amorphous Na-S-P-O. Our simulations demonstrate that oxygen doping contracts the structure, thereby reducing the diffusion coefficient of Na ions, while simultaneously enhancing sintering densification, leading to a more favorable structure for Na-ion diffusion. This work provides a new perspective on the mechanism previously proposed in experimental studies. Offering a novel atomic-level understanding of oxygen doping's role, our research aids in designing superior sodium-ion solid electrolytes. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Machine Learning, Modeling and Simulation |