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Current Progress of Si/Graphene Nanocomposites for Lithium-Ion Batteries

Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, MA 01609, USA
The Key State Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
Authors to whom correspondence should be addressed.
Received: 28 January 2018 / Revised: 13 March 2018 / Accepted: 15 March 2018 / Published: 19 March 2018
(This article belongs to the Special Issue Batteries: Recent Advances in Carbon Materials 2017)
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The demand for high performance lithium-ion batteries (LIBs) is increasing due to widespread use of portable devices and electric vehicles. Silicon (Si) is one of the most attractive candidate anode materials for next generation LIBs. However, the high-volume change (>300%) during lithium ion alloying/de-alloying leads to poor cycle life. When Si is used as the anode, conductive carbon is needed to provide the necessary conductivity. However, the traditional carbon coating method could not overcome the challenges of pulverization and unstable Solid Electrolyte Interphase (SEI) layer during long-term cycling. Since 2010, Si/Graphene composites have been vigorously studied in hopes of providing a material with better cycling performance. This paper reviews current progress of Si/Graphene nanocomposites in LIBs. Different fabrication methods have been studied to synthesize Si/Graphene nanocomposites with promising electrochemical performances. Graphene plays a key enabling role in Si/Graphene anodes. However, the desired properties of graphene for this application have not been systematically studied and understood. Further systematic investigation of the desired graphene properties is suggested to better control the Si/Graphene anode performance. View Full-Text
Keywords: Si anode; graphene; nanocomposites; lithium-ion batteries Si anode; graphene; nanocomposites; lithium-ion batteries

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Cen, Y.; Sisson, R.D.; Qin, Q.; Liang, J. Current Progress of Si/Graphene Nanocomposites for Lithium-Ion Batteries. C 2018, 4, 18.

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