Abstract
Currently, seeking the impressive electrode material with superior performance used in lithium-ion batteries (LIB) is an emerging field of exploration. Aiming at the bad cyclic stability and poor rate performance of MnO anode materials in LIB, a simple and effective strategy adopted by preparing hybrid material composed of MnO nanostructures. In this paper, we report that the nitrogen-doped (N-doped) thermally reduced graphene oxide quantum dots (rGO QDs)–MnO composites synthesized by simple electrospinning method and toward enhanced-performance Li-ion battery. After a series of characterization and test, the rGO QDs–MnO electrode material still shows a high stable capacity of ca.760 mAh g−1 after 300 cycles with a current density of 0.1A g−1; it has a great improvement compared with pure MnO. Moreover, the rGO QDs–MnO composites have exhibited excellent rate capability. In fact, the introduction of N-doped rGO QDs not only improves the structure mechanical property but also facilitates the carrier transport in the MnO nanowires, acting as an effective sensitizer to enhance the reaction kinetics.
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Acknowledgements
This work was supported by the joint fund of the National Natural Science Foundation Committee of China Academy of Engineering Physics (NSAF) (U1630108). We also thank the USTC Center for Micro and Nanoscale Research and Fabrication for the contribution to the work.
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Zhu, X., Li, J., Liu, P. et al. Nitrogen-doped thermally reduced graphene oxide quantum dots–MnO composite toward enhanced-performance Li-ion battery. Appl. Phys. A 124, 722 (2018). https://doi.org/10.1007/s00339-018-2143-y
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DOI: https://doi.org/10.1007/s00339-018-2143-y