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

作者：Du Xue-Lian; Cong Ye^*; Jiang Lu; Li Xuan-Ke; Cui Zheng-Wei; Dong Zhi-Jun; Yuan Guan-Ming; Zhang Jiang

来源：Acta Physico - Chimica Sinica, 2015, 31(3): 583-588.

DOI：10.3866/PKU.WHXB201501212

• Silicon carbide-derived carbon
• Composite
• Structure regulation
• Specific surface area
• Pore size distribution

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 N-2 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 nnn. 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.

• 出版日期2015-3-15
• 单位武汉科技大学