| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2024
|
| Presentation Title |
A-6: A Mechanistic Study of MXene Current Collectors for Lithium-metal-based Batteries |
| Author(s) |
Ruocun Wang, Jaehoon Choi, Yan Burets, Mark Anayee, Ray Unocic, Geetha Valurouthu, Wan-Yu Tsai, Yury Gogotsi |
| On-Site Speaker (Planned) |
Ruocun Wang |
| Abstract Scope |
Lithium metal is widely investigated as a high-energy-density anode replacement for graphite in lithium-ion batteries. It is important for next-generation lithium-metal-based battery technologies. However, lithium dendrites tend to grow during deposition and stripping, resulting in poor battery life or short circuits. Literature shows that using MXene instead of copper as the current collector can mitigate lithium dendrites growth. Two mainstream hypotheses for dendrite suppression include forming a hexagonal close-packed structured lithium layer and a homogeneous growth of solid-electrolyte interphase (SEI) on the surface of MXene. However, there is a lack of experimental evidence to support those hypotheses. Here we used a suite of characterization techniques, including cryo-transmission electron microscopy (cryo-TEM), X-ray photoelectron spectroscopy (XPS), in situ Raman spectroscopy, scanning electron microscopy (SEM), and operando optical microscopy to investigate the crystal structure, SEI, and morphology of lithium nucleated on Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene at different rates and capacity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Nanotechnology, Phase Transformations |