Nano Research

, Volume 3, Issue 10, pp 748–756

Laterally confined graphene nanosheets and graphene/SnO2 composites as high-rate anode materials for lithium-ion batteries

Authors

  • Zhiyong Wang
    • Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular EngineeringPeking University
  • Hao Zhang
    • Research Institute of Chemical Defense
  • Nan Li
    • Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular EngineeringPeking University
    • Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular EngineeringPeking University
  • Zhennan Gu
    • Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular EngineeringPeking University
  • Gaoping Cao
    • Research Institute of Chemical Defense
Open AccessResearch Article

DOI: 10.1007/s12274-010-0041-5

Cite this article as:
Wang, Z., Zhang, H., Li, N. et al. Nano Res. (2010) 3: 748. doi:10.1007/s12274-010-0041-5

Abstract

High-rate anode materials for lithium-ion batteries are desirable for applications that require high power density. We demonstrate the advantageous rate capability of few-layered graphene nanosheets, with widths of 100–200 nm, over micro-scale graphene nanosheets. Possible reasons for the better performance of the former include their smaller size and better conductivity than the latter. Combination of SnO2 nanoparticles with graphene was used to further improve the gravimetric capacities of the electrode at high charge-discharge rates. Furthermore, the volumetric capacity of the composites was substantially enhanced compared to pristine graphene due to the higher density of the composites.

Keywords

Carbongrapheneanodelithium-ion batteriesSnO2nanomaterials
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Supplementary material

12274_2010_41_MOESM1_ESM.pdf (606 kb)
Supplementary material, approximately 605 KB.

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2010