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Li Storage Properties of Disordered Graphene Nanosheets

Pan, Dengyu, Wang, Song, Zhao, Bing, Wu, Minghong, Zhang, Haijiao, Wang, Yong, Jiao, Zheng·2009·Chemistry of Materials

Abstract

Graphene has aroused intensive interest because of its unique structure, superior properties, and various promising applications. Graphene nanostructures with significant disorder and defects have been considered to be poor materials because disorder and defects lower their electrical conductivity. In this paper, we report that highly disordered graphene nanosheets can find promising applications in high-capacity Li ion batteries because of their exceptionally high reversible capacities (794−1054 mA h/g) and good cyclic stability. To understand the Li storage mechanism of graphene nanosheets, we have prepared graphene nanosheets with structural parameters tunable via different reduction methods including hydrazine reduction, low-temperature pyrolysis, and electron beam irradiation. The effects of these parameters on Li storage properties were investigated systematically. A key structural parameter, Raman intensity ratio of D bands to G bands, has been identified to evaluate the reversible capacity. The greatly enhanced capacity in disordered graphene nanosheets is suggested to be mainly ascribed to additional reversible storage sites such as edges and other defects.

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Metadata

Authors
Pan, D., Wang, S., Zhao, B., Wu, M., Zhang, H., Wang, Y., & Jiao, Z.
Venue
Chemistry of Materials
Published
2009-07-06
Volume
21
Issue
14
Pages
3136-3142
ISSN
  • 0897-4756 (ISSN-L)
  • 1520-5002
OpenAlex
W1994367947
Cited by
1,030
References
3
FWCI
44.09
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Li Storage Properties of Disordered Graphene Nanosheets. https://app.cochat.ai/papers/10.1021/cm900395k
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Pan, D., Wang, S., Zhao, B., Wu, M., Zhang, H., Wang, Y., & Jiao, Z. (2009). Li Storage Properties of Disordered Graphene Nanosheets. Chemistry of Materials. https://doi.org/10.1021/cm900395k

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