Microwave hydrothermal growth of In2S3 interconnected nanoflowers and nanoparticles on graphene for high-performance Li-ion batteries

摘要: This paper reports microwave-assisted fast hydrothermal synthesis of In2S3 nanoparticles and unprecedented interconnected nanoflowers on graphene surface. The growth mechanisms for various In2S3-based products are investigated. These obtained found to be uniformly dispersed nanosheets, forming sandwiched particle-on-sheet flower-on-sheet nanostructures. When fabricated as anode materials, In2S3–graphene composites show extraordinary large reversible capacities good cycling performances high rate capabilities. A initial lithium-extraction capacity 1249 mA h g−1 is observed the novel nanostructure at 70 g−1, which can retained 913, 782, 690 currents 700, 1400, 3500 respectively. In comparison, nanoparticle-on-sheet composite shows slightly lower but more stable both small mainly due presence graphene.