SnS2 nanoparticle loaded graphene nanocomposites for superior energy storage

By Ji, Liwen; Xin, Huolin L.; Kuykendall, Tevye R.; Wu, Shao-Ling; Zheng, Haimei; Rao, Mumin; Cairns, Elton J.; Battaglia, Vincent & Zhang, Yuegang
Published in Phys. Chem. Chem. Phys. The Royal Society of Chemistry 2012

Abstract

SnS2 nanoparticle-loaded graphene nanocomposites were synthesized via one-step hydrothermal reaction. Their electrochemical performance was evaluated as the anode for rechargeable lithium-ion batteries after thermal treatment in an Ar environment. The electrochemical testing results show a high reversible capacity of more than 800 mA h g-1 at 0.1 C rate and 200 mA h g-1 for up to 5 C rate. The cells also exhibit excellent capacity retention for up to 90 cycles even at a high rate of 2 C. This electrochemical behavior can be attributed to the well-defined morphology and nanostructures of these as-synthesized nanocomposites, which is characterized by high-resolution transmission electron microscopy and electron energy-loss spectroscopy.

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