About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage VII
|
Presentation Title |
A Simple Method to Fabricate Cu6Sn5 Anodes for Lithium-ion Batteries |
Author(s) |
Xin Fu Tan, Qinfen Gu, Stuart McDonald, Kazuhiro Nogita |
On-Site Speaker (Planned) |
Xin Fu Tan |
Abstract Scope |
The intermetallic Cu6Sn5 is a promising candidate material for lithium-ion battery anodes due to its higher theoretical storage capacity of 605 mAh g-1 vs. 372 mAh g-1 compared to traditional carbon-based anodes, combined with better safety profiles with lower risks of Li dendrite formation. One of the simplest methods of producing Cu6Sn5 is through a spontaneous reaction between a Cu current collector and a liquid Sn-based alloy. The fabrication time can be significantly shortened by alloying Ni in the Cu current collector, while the electrochemical performance of Cu6Sn5 anodes fabricated with this method can be enhanced by trace additions of a third element, altering the crystal orientation and atomic arrangements. Electron microscopy, electron backscatter diffraction, synchrotron powder X-ray diffraction and synchrotron X-ray imaging are used to characterise the electrodes and reaction mechanisms, revealing the interplay between electrode microstructure, crystal structure and performance. |
Proceedings Inclusion? |
Planned: |