Abstract
Graphene is an excellent substrate to load nanomaterials for energy applications due to its large surface area, excellent conductivity, mechanical strength, and chemical stability. In this study, thermal exfoliated functionalized graphene sheets with good conductivity and high BET surface area are anchored with mesoporous NiO nanoplates by in situ chemical synthesis approach. Electrochemical characterization shows that functionalized graphene sheets–NiO sample exhibits a high capacity of about 700 mAh/g at a discharge current density of 100 mA/g and a good cycling ability. The high capacity and good cycling ability of functionalized graphene sheets –NiO material were attributed to the intimate interaction between the graphene sheets and NiO nanoplates. The graphene sheets not only enhance the conductivity of NiO nanoplates but also improve the structure stability of NiO nanoplates. Furthermore, the mesoporous structure of NiO nanoplates is available to the transfer of electrolyte. Such functionalized graphene sheets–NiO nanocomposite could be a promising candidate material for a high-capacity, low cost, and nontoxic anode for lithium-ion batteries.
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Abbreviations
- FGS:
-
Functionalized graphene sheets
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Acknowledgments
This work was supported by China Postdoctoral Science Foundation (No. 20100471296), Postdoctoral Foundation of Jiangsu Province (No. 1001003C), Nature Science Foundation of Jiangsu Province (No. BK2007146), and National Nature Science Foundation of China (No. 60928009 and 60990314).
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Danfeng Qiu and Zijing Xu contributed equally to this work.
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Qiu, D., Xu, Z., Zheng, M. et al. Graphene anchored with mesoporous NiO nanoplates as anode material for lithium-ion batteries. J Solid State Electrochem 16, 1889–1892 (2012). https://doi.org/10.1007/s10008-011-1466-9
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DOI: https://doi.org/10.1007/s10008-011-1466-9