Title

SnS2 nanoplatelet@graphene nanocomposites as high-capacity anode materials for sodium-ion batteries

RIS ID

89284

Publication Details

Xie, X., Su, D., Chen, S., Zhang, J., Dou, S. & Wang, G. (2014). SnS2 nanoplatelet@graphene nanocomposites as high-capacity anode materials for sodium-ion batteries. Chemistry: An Asian Journal, 9 (6), 1611-1617.

Abstract

Na-ion batteries have been attracting intensive investigations as a possible alternative to Li-ion batteries. Herein, we report the synthesis of SnS2 nanoplatelet@graphene nanocomposites by using a morphology-controlled hydrothermal method. The as-prepared SnS2/graphene nanocomposites present a unique two-dimensional platelet-on-sheet nanoarchitecture, which has been identified by scanning and transmission electron microscopy. When applied as the anode material for Na-ion batteries, the SnS2/graphene nanosheets achieved a high reversible specific sodium-ion storage capacity of 725 mA h g−1, stable cyclability, and an enhanced high-rate capability. The improved electrochemical performance for reversible sodium-ion storage could be ascribed to the synergistic effects of the SnS2 nanoplatelet/graphene nanosheets as an integrated hybrid nanoarchitecture, in which the graphene nanosheets provide electronic conductivity and cushion for the active SnS2 nanoplatelets during Na-ion insertion and extraction processes.

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Link to publisher version (DOI)

http://dx.doi.org/10.1002/asia.201400018