| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XIX
|
| Presentation Title |
Real-time Observation of the Accelerated Growth of (Cu,Ni)6Sn5 on Cu-xNi Current Collectors |
| Author(s) |
Xin Fu Tan, Hideyuki Yasuda, 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 spontaneously reaction between a Cu current collector and a liquid Sn-based alloy. The addition of 2-14wt% of Ni to the Cu current collector greatly accelerates the growth of (Cu,Ni)6Sn5, reducing the processing time above 200˚C to less than 10 minutes. This research studies the dynamics of the accelerated growth through real-time observation of the formation of (Cu,Ni)6Sn5 between Cu-xNi alloys and liquid Sn using Synchrotron X-ray imaging. The results help establish the mechanisms of growth and confirm the kinetics are suitable for potential mass production with existing equipment and technologies. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |