A Facile Synthesis of SiO2@C@graphene Composites as Anode Material For Lithium Ion Batteries

作者：Ren, Yurong^*; Wei, Hengma; Huang, Xiaobing; Ding, Jianning

来源：International Journal of Electrochemical Science, 2014, 9(12): 7784-7794.

DOI：10.1016/s1452-3981(23)11005-4

• SiO2@C@graphene composites
• hydrothermal method
• thermal treatment
• electrochemical performance
• Li-ion battery

SiO2@C@graphene composites were prepared by two-step hydrothermal method and thermal treatment, and then characterized by XRD, FT-IR, Raman, FE-SEM, and TEM. The results demonstrated that SiO2@C@graphene composites exhibit higher reversible capacity, improved cycling stability, and favorable rate capability compared with bare SiO2 nanoparticles and SiO2@C composites. At 50 mA/g, 200 mA/g and 1000 mA/g, the SiO2@C@graphene composites delivered a discharge capacity of 225 mAh/g, 152 mAh/g, 76 mAh/g, respectively, and after 200 cycles at 50 mA/g, the discharge capacity remained above 250 mAh/g.

• 出版日期2014-12
• 单位常州大学; 湖南文理学院