Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (3): 583-588.doi: 10.3866/PKU.WHXB201501212

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

Preparation and Structure Regulation of Silicon Carbide-Derived Carbon/ Spherical Natural Graphite Composites

DU Xue-Lian1,2, CONG Ye1,2, JIANG Lu2, LI Xuan-Ke1,2, CUI Zheng-Wei2, DONG Zhi-Jun2, YUAN Guan-Ming2, ZHANG Jiang2   

  1. 1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China;
    2. Hubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
  • Received:2014-12-09 Revised:2015-01-20 Published:2015-03-06
  • Contact: CONG Ye, LI Xuan-Ke;
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (51472186, 51402221).


To meet the requirements of the energy storage materials for high energy density and high power density, porous silicon carbide/derived carbon-spherical natural graphite (SiC-CDCs@NG) composites were prepared. The composites were composed of tailored porous carbide-derived carbon and graphitized carbon with excellent conductivity and a high energy storage capacity. The composition, structure, morphology, pore structure, and specific surface area of the composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and N2 adsorption/ desorption analysis. The composites exhibited a high and adjustable specific surface area and micro-pore volume, with a micro-pore size of between 0.5 and 0.7 nm. Varying the molar ratio of NG and Si allowed optimization of the micro-pore volume, pore size distribution, specific surface area, and composition and content of the CDCs shell and NG core.

Key words: Silicon carbide-derived carbon, Composite, Structure regulation, Specific surface area, Pore size distribution