| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
2010 Functional and Structural Nanomaterials: Fabrication, Properties, Applications and Implications
|
| Presentation Title |
Synthesis of Tin Filled Carbon Nanotubes and Their Application to Lithium Ion Batteries |
| Author(s) |
Raj Das Gupta, Carsten Schwandt, Derek Fray |
| On-Site Speaker (Planned) |
Derek Fray |
| Abstract Scope |
There is a need to increase the charge capacity of the anodes in lithium ion batteries and this can be achieved by using tin, aluminium or silicon particles but the particles decrepitate, due to the large volume changes on charging and discharging. In order to overcome this problem, carbon nanotubes were filled with tin by placing graphite electrodes into a bath of molten lithium chloride – tin chloride and applying a slow alterating current. It was found that the yield of carbon nanotubes was high and the majority were filled with tin. Anodes were made from this material and it was found that the charge capacity levelled off at 430 mAh/g after about 400 charge-discharge cycles at which point it became constant. TEM examination of the used anode showed that the nanotubes had expanded due to the volume changes of the tin but still encapsulated the tin particles. |
| Proceedings Inclusion? |
Undecided |