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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Nanocomposites IV: Nanoscience for Renewable Energy
Presentation Title Fabrication of Silicon/Graphite Nanocomposite as Promising Anode Material for Lithium-ion Battery Applications
Author(s) Maziar Ashuri, Qianran He, Leon L. Shaw
On-Site Speaker (Planned) Maziar Ashuri
Abstract Scope Silicon with more than 4000 mA h g-1 theoretical capacity is one of the most promising candidates among other anode materials for Li-ion batteries. However, it suffer from huge volume change during charge/discharge process. Several strategies have been proposed to overcome this issue such as core-shell and yolk-shell nanostructures, Si nanotubes, etc. However, most of them requires expensive equipment, long time synthesis, and special set up. In this study, we try to look at the old silicon/graphite composite with the new approach of etching. To fabricate the composite, silicon and graphite were ball-milled together. Then, the obtained nanocomposite was coated with a thin carbon shell. The last step was etching the carbon-coated nanocomposite. The etchant used was 0.5 M sodium hydroxide solution. The product was washed with deionized waster and applied as active material for half cells. The electrochemical results showed improved performance comparing to crystalline silicon.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


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