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Kinetics enhancement of lithium–sulfur batteries by interlinked hollow MoO2 sphere/nitrogen-doped graphene composite

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Abstract

The shuttle effect and poor redox kinetics are vital issues restricting the evolution of lithium sulfur batteries; it is therefore exigent to rationally design an effective sulfur host. Hence, this paper reports a hollow MoO2 sphere anchored on nitrogen-doped graphene. The hollow MoO2 sphere controls the polysulfide dissolution, and the nitrogen-doped graphene provides a conductive network and high sulfur loading. Meanwhile, the C–O–Mo bond interlinking MoO2 and N-doped graphene provides a pathway for electron transfer, and the synergistic effect enhances the kinetics of lithium sulfur batteries profitably. Ascribed to the unique structure of MoO2/nitrogen-doped graphene, the obtained electrode exhibits a substantially enhanced electrochemical performance.

Graphical abstract: Kinetics enhancement of lithium–sulfur batteries by interlinked hollow MoO2 sphere/nitrogen-doped graphene composite

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Publication details

The article was received on 08 Oct 2017, accepted on 23 Nov 2017 and first published on 23 Nov 2017


Article type: Communication
DOI: 10.1039/C7TA08859K
Citation: J. Mater. Chem. A, 2017, Advance Article
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    Kinetics enhancement of lithium–sulfur batteries by interlinked hollow MoO2 sphere/nitrogen-doped graphene composite

    X. Wu, Y. Du, P. Wang, L. Fan, J. Cheng, M. Wang, Y. Qiu, B. Guan, H. Wu, N. Zhang and K. Sun, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA08859K

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