| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2022
|
| Presentation Title |
Magnetoelectrochemical Control of Interfacial Degradation during Fast Charging of LIB |
| Author(s) |
Abhishek Sarkar, Pranav Shrotriya, Cajetan Ikenna Nlebedim |
| On-Site Speaker (Planned) |
Abhishek Sarkar |
| Abstract Scope |
Anodic degradations in graphitic materials under fast charging conditions cause severe performance loss and safety hazard in lithium batteries. We present a method of minimizing the growth of these ageing mechanisms by application of an external magnetic field. The magnetohydrodynamic forces on diffusing species in a magnetic field homogenizes ionic transport and minimizes interfacial overpotential hotspots, consequently reducing SEI growth, lithium plating, and interfacial fracture. Electrochemical measurements indicate a capacity gain in full LCO/C cells charged (1 – 5 C) under applied field (1.8 kG), with a maximum of 23% at 5C. FE-SEM/ EDS show charging under magnetic field have reduced lithium deposition at 3C and completely suppressed interfacial fracture at 5C. XPS indicates 24% reduction in the lithium deposition at 5C. Finally, a saturation behavior in capacity is observed at high fields (> 2 kG), thereby limiting the consequent energy requirements to obtain maximum capacity gain under extreme conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Other, |