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Core-shell MoS2@graphene composite microspheres as stable anode for Li-ion batteries

Abstract

Transition metal dichalcogenides are anode materials of high-capacity suitable to use in lithium-ion batteries. They are frequently affected by high volume expansion in the course of lithiation which leads to capacity decay. An effective method for extending cycle stability is to introduce a carbon material shell to limit the change in volume. In this paper, an economical new approach was used to synthesise microspheres of MoS2@graphene composite with a core-shell structure. The MoS2@graphene composite microspheres demonstrated excellent lithium storage capability owing to the beneficial effects of the graphene shell. A high reversible capacity of ≈810 mA h g-1 is obtained at 100 mA h-1, maintaining 894 mA h g −1 after 100 cycles. The electrochemical properties of MoS2@graphene are significantly superior to that of the bare MoS2 spheres. This research established an effective approach to minimise volume expansion which can be applied to other anode materials and enable enhanced LIB performance.

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Publication details

The article was received on 06 Mar 2018, accepted on 04 Aug 2018 and first published on 07 Aug 2018


Article type: Paper
DOI: 10.1039/C8NJ01100A
Citation: New J. Chem., 2018, Accepted Manuscript
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    Core-shell MoS2@graphene composite microspheres as stable anode for Li-ion batteries

    H. Xue, J. Wang, S. Wang, S. Muhammad, C. Feng, Q. Wu, H. Li, D. Shi, Q. Jiao and Y. Zhao, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ01100A

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