About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nano and Micro Additive Manufacturing
|
| Presentation Title |
Micro-Architected LiFePO4(LFP)/C Electrodes for Enhanced Ionic Transport |
| Author(s) |
Yingjin Wang, Julia R. Greer |
| On-Site Speaker (Planned) |
Yingjin Wang |
| Abstract Scope |
The interconnected pore structure and enhancement in the surface-area-to-volume ratio represent the key advantages of 3D battery electrodes over their slurry-based counterparts. We utilized hydrogel infusion additive manufacturing (HIAM) to fabricate micro-architected LFP/C electrodes in tilted cubes, honeycombs, and triply periodic minimal surfaces (TPMS) geometries, with a minimum feature size of 18 µm. A concomitantly formed carbon network within the lattice provides mechanical resilience, achieving an effective elastic modulus of 18.7MPa. The honeycomb electrode showed a capacity of 125 mAh/g at 1C in a coin cell, which is 140% greater than other architectures. We developed an electrochemical model that incorporates the specific electrode geometry with respect to the ionic flow, demonstrating the dominant effect of Li+ transport in electrolyte and Li+ diffusion in electrodes on the active material utilization. This work introduces a versatile manufacturing platform for 3D electrodes and provides insights into structure optimization for high-performance lithium-ion batteries. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Energy Conversion and Storage, |