Adaptable silicon-carbon nanocables sandwiched between reduced graphene oxide sheets as lithium ion battery anodes

Wang, Bin, Li, Xianglong, Zhang, Xianfeng, Luo, Bin, Jin, Meihua, Liang, Minghui, Dayeh, Shadi A., Picraux, S. T. and Zhi, Linjie (2013) Adaptable silicon-carbon nanocables sandwiched between reduced graphene oxide sheets as lithium ion battery anodes. ACS Nano, 7 2: 1437-1445. doi:10.1021/nn3052023


Author Wang, Bin
Li, Xianglong
Zhang, Xianfeng
Luo, Bin
Jin, Meihua
Liang, Minghui
Dayeh, Shadi A.
Picraux, S. T.
Zhi, Linjie
Title Adaptable silicon-carbon nanocables sandwiched between reduced graphene oxide sheets as lithium ion battery anodes
Journal name ACS Nano   Check publisher's open access policy
ISSN 1936-0851
1936-086X
Publication date 2013-02-26
Sub-type Article (original research)
DOI 10.1021/nn3052023
Open Access Status Not yet assessed
Volume 7
Issue 2
Start page 1437
End page 1445
Total pages 9
Place of publication Washington, DC United States
Publisher American Chemical Society
Language eng
Formatted abstract
Silicon has been touted as one of the most promising anode materials for next generation lithium ion batteries. Yet, how to build energetic silicon-based electrode architectures by addressing the structural and interfacial stability issues facing silicon anodes still remains a big challenge. Here, we develop a novel kind of self-supporting binder-free silicon-based anodes via the encapsulation of silicon nanowires (SiNWs) with dual adaptable apparels (overlapped graphene (G) sheaths and reduced graphene oxide (RGO) overcoats). In the resulted architecture (namely, SiNW@G@RGO), the overlapped graphene sheets, as adaptable but sealed sheaths, prevent the direct exposure of encapsulated silicon to the electrolyte and enable the structural and interfacial stabilization of silicon nanowires. Meanwhile, the flexible and conductive RGO overcoats accommodate the volume change of embedded SiNW@G nanocables and thus maintain the structural and electrical integrity of the SiNW@G@RGO. As a result, the SiNW@G@RGO electrodes exhibit high reversible specific capacity of 1600 mAh g-1 at 2.1 A g-1, 80% capacity retention after 100 cycles, and superior rate capability (500 mAh g-1 at 8.4 A g -1) on the basis of the total electrode weight.
Keyword Adapting
Graphene
Lithium ion battery
Silicon nanowire
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Institute for Molecular Bioscience - Publications
 
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