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Issue 22, 2019
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Metal–organic framework derived yolk–shell NiS2/carbon spheres for lithium–sulfur batteries with enhanced polysulfide redox kinetics

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Abstract

Yolk–shell NiS2/carbon spheres (yolk–shell NiS2/C) have been synthesized by one-step annealing of yolk–shell Ni-metal–organic framework spheres. In particular, both the inner yolk sphere and the outer shell of yolk–shell NiS2/C can provide catalytically active sites for the redox of polysulfide confined in the yolk–shell structure, providing enhanced redox kinetics. A yolk–shell NiS2/C–sulfur cathode exhibits a high rate capacity of 569 mA h g−1 at 2C and shows excellent cycling stability, demonstrating the superiority of the yolk–shell structure.

Graphical abstract: Metal–organic framework derived yolk–shell NiS2/carbon spheres for lithium–sulfur batteries with enhanced polysulfide redox kinetics

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Publication details

The article was received on 19 Jan 2019, accepted on 20 Feb 2019 and first published on 21 Feb 2019


Article type: Communication
DOI: 10.1039/C9CC00486F
Chem. Commun., 2019,55, 3243-3246

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    Metal–organic framework derived yolk–shell NiS2/carbon spheres for lithium–sulfur batteries with enhanced polysulfide redox kinetics

    Y. Tian, H. Huang, G. Liu, R. Bi and L. Zhang, Chem. Commun., 2019, 55, 3243
    DOI: 10.1039/C9CC00486F

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