物理化学学报 >> 2015, Vol. 31 >> Issue (3): 583583-588.doi: 10.3866/PKU.WHXB201501212

材料物理化学 上一篇    下一篇

碳化硅衍生碳/球形天然石墨复合材料的制备及其结构调控

杜雪莲1,2, 丛野1,2, 姜露2, 李轩科1,2, 崔正威2, 董志军2, 袁观明2, 张江2   

  1. 1. 武汉科技大学, 省部共建耐火材料与冶金国家重点实验室, 武汉 430081;
    2. 武汉科技大学, 湖北省煤转化与新型炭材料重点实验室, 武汉 430081
  • 收稿日期:2014-12-09 修回日期:2015-01-20 发布日期:2015-03-06
  • 通讯作者: 丛野, 李轩科 E-mail:congye626@126.com;xkli8524@sina.com
  • 基金资助:

    国家自然科学基金(51472186, 51402221)资助项目

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 E-mail:congye626@126.com;xkli8524@sina.com
  • Supported by:

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

摘要:

为满足储能领域对于材料兼具高能量密度和高功率密度的需求, 本文旨在将具有特殊孔隙结构的碳化物衍生碳与具有高导电性和高能量存储密度的石墨化碳(球形天然石墨)相复合, 制备得到一种多孔碳化硅衍生碳/球形天然石墨(SiC-CDCs@NG)复合材料. 采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、拉曼光谱、N2吸/脱附等方法对材料的组成、结构、形貌、孔结构和比表面积等进行了表征. 结果表明,SiC-CDCs@NG材料具有较大的且可调节的比表面积和微孔体积, 微孔孔径集中在0.5-0.7 nm范围内; 通过改变NG/Si 摩尔比, 可以有效调控CDCs壳和NG核在复合材料中的组成分布、CDCs微孔的体积、孔径分布和比表面积.

关键词: 碳化硅衍生碳, 复合材料, 结构调控, 比表面积, 孔径分布

Abstract:

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

MSC2000: 

  • O648