MSA  Vol.8 No.13 , December 2017
Hydrothermal Synthesis and Electrochemical Performance of Amorphous SiO2 Nanospheres/Graphene Composites
Abstract: The exceptional mechanical and electrical nature of grapheme makes it a viable candidate for enhancing the effectiveness of electrode material. In recent years, Graphene based SiO2 nanocomposites is a research hot topic of anode materials in lithium-ion batteries. In this paper, the amorphous SiO2 nanospheres/graphene composite was synthesized by hydrothermal method. Amorphous SiO2 is attached to the surface of graphene with a spherical structure and its average diameter is about 200 nm. The weight of SiO2 in the nanospheres composite is about 43%. Electrochemical tests showed that the amorphous SiO2 nanospheres/graphene composite exhibited the first charge and discharge capacity is respectively 329.5 mAhg-1 and 444.1 mAhg-1, and remain at 257.8 mAhg-1 and 274.6 mAhg-1 for 50th cycles at a current density of 200 mAg-1. The amorphous SiO2 nanospheres/graphene composite structure is novelty and the results are of great significance to the preparation and application of new anode materials.
Cite this paper: Yang, Y. , Gao, Y. , Liu, J. and Fang, X. (2017) Hydrothermal Synthesis and Electrochemical Performance of Amorphous SiO2 Nanospheres/Graphene Composites. Materials Sciences and Applications, 8, 959-965. doi: 10.4236/msa.2017.813070.

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