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An ordered hollow MoS2 nanocages/RGO nanocomposite is constructed by a simple solvothermal-assisted assembly method combined with freeze-drying and annealing. In this novel nanostructure, hollow MoS2 nanocages are homogeneously distributed on graphene sheets with a tight bond of C-O-Mo. The nanosized and hollow MoS2 nanocages can effectively accommodate the huge volume change during charge/discharge process and increase the number of electrochemical reaction active sites, accelerating the kinetics of lithiation/delithiation. The tight C-O-Mo bond between graphene and MoS2 further reinforces the structural stability, thus improve the electrical conductivity and substantially enhance the lithium storage performance of MoS2 anode material. As a result, this novel nanocomposite shows a long-cycle stability of 717.4 mAh·g-1 after 800 cycles at a high current density of 3 A·g-1, exhibiting great potential as an anode nanocomposite for advanced lithium-ion batteries.

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Publication history

Received: 16 December 2019
Revised: 06 February 2020
Accepted: 29 February 2020
Published: 14 April 2020
Issue date: April 2020

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020

Acknowledgements

This research was supported by the National Natural Science Foundation of China (No. 51772150 and 21808103), Natural Science Foundation of Jiangsu Province (No. BK20171012), and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). The authors are grateful to Dr. Lin Gao and the Reviewers for their helpful suggestions and comments.

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Email: nanores@tup.tsinghua.edu.cn

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