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




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Nano Research

, Volume 3, Issue 10, pp 748–756

First Online: 21 September 2010Received: 09 June 2010Revised: 01 September 2010Accepted: 02 September 2010DOI: 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.

KeywordsCarbon graphene anode lithium-ion batteries SnO2 nanomaterials This article is published with open access at Springerlink.com

Electronic Supplementary MaterialSupplementary material is available for this article at 10.1007-s12274-010-0041-5 and is accessible for authorized users.

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Author: Zhiyong Wang - Hao Zhang - Nan Li - Zujin Shi - Zhennan Gu - Gaoping Cao

Source: https://link.springer.com/







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