Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (4): 628-634.doi: 10.1007/s40242-018-7382-0

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Preparation of Monodispersed Carbon Spheres via Hydrothermal Carbonization of Ascorbic Acid and Their Application in Lithium Ion Batteries

ZHOU Xuejiao, XU Liangyou, LIU Xiyao, ZHANG Junjun, DIAO Hongchao, MA Xiaohua   

  1. School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710071, P. R. China
  • Received:2017-11-28 Online:2018-08-01 Published:2018-05-21
  • Contact: ZHOU Xuejiao, MA Xiaohua E-mail:xjzhou@xidian.edu.cn;xhma@xidian.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51502231) and the Natural Science Foundation of Shaanxi Province, China(No.2017JM5064).

Abstract: Hydrothermal carbonization is one of the most appealing strategies to prepare carbon spheres(CSs). Nevertheless, the precursors of hydrothermal carbonization are limited to several saccharides currently and the obtained CSs are easily interconnected among each other, giving rise to difficulties in further treatment and applications. In this work, ascorbic acid was used as precursor in the hydrothermal procedure and monodispersed CSs could be fabricated without any catalysts. In addition, the composites of CSs and chemical reduced graphene oxide(CRG) possessing three dimensional network structures were fabricated, which exhibited excellent electrochemical performance used as anode in lithium ion battery(LIB). Meanwhile, the effects of size distributions of CSs on the electrochemical performances were evaluated.

Key words: Carbon sphere, Graphene, Lithium ion battery, Ascorbic acid