| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Functional Nanomaterials
|
| Presentation Title |
Ion Transport with Convective Flow in Graphene Nanochannels of Flow Cell Battery Electrodes |
| Author(s) |
Seungha Shin, Yu-Kai Weng, Md Abdullah Al Hasan, Daniel D. Lee, Kenneth D. Kihm |
| On-Site Speaker (Planned) |
Seungha Shin |
| Abstract Scope |
In the electrodes of organic redox flow batteries, convective flux of electrolytes by pressure gradient is a main driving force for the ion transport in addition to the electric field, and thus, the improvement of the convective ion transport is needed. To improve flow battery systems, our research focused on developing porous graphene aerogel electrodes with effective ion transport and enhancing the understanding of convective ion transport, specifically in graphene nanochannels. The influence of hydrodynamic, thermodynamic, and geometric conditions on ion transport was investigated, considering the interactions among ions, water, and the channel surface for effective control of ionic mobility. Nanoscale confinement alters the hydrodynamic properties of convective flow compared to its bulk counterpart, thereby affecting ion mobility. The coupling between electric field-driven flow and convective flow was comprehensively examined via molecular dynamics simulations. The findings from this work provide insights into ion transport control mechanisms for enhancing electrode performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Modeling and Simulation, Thin Films and Interfaces |