Abstract
A nanocomposite of graphene/MnO2 nanoplatelets was prepared by one-step chemistry route at room temperature. The microstructure was characterized by X-ray diffraction, N2 absorption, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Both TEM and SEM images show that MnO2 nanoplatelets are homogeneously distributed on the graphene nanosheets. The electrochemical properties were tested by cyclic voltammetry, galvanostatic charge–discharge experiments. The nanocomposite exhibited high lithium capacity (905 mAh g−1 at 100 mA g−1). The superior lithium storage capability can be attributed to the “open” structure: the large effective surface area and short diffusion paths.
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Acknowledgments
The authors would like to thank the financial support from the Fundamental Research Funds for the Central Universities of China (Nos. CDJZR10 13 88 01 and CDJXS10 13 11 58) and National Natural Science Foundation of China (No. 51172293).
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Li, X., Song, H., Wang, H. et al. A nanocomposite of graphene/MnO2 nanoplatelets for high-capacity lithium storage. J Appl Electrochem 42, 1065–1070 (2012). https://doi.org/10.1007/s10800-012-0488-z
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DOI: https://doi.org/10.1007/s10800-012-0488-z