Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (10): 2269-2275.doi: 10.3866/PKU.WHXB201209061

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Preparation of Three-Dimensional Carbon Microtube/Carbon Nanotube Composites and Their Application in Supercapacitor

HUANG Wen, ZHAO Jin, KANG Qi, XU Kaichen, YU Zhen, WANG Jian, MA Yan-Wen, HUANG Wei   

  1. Jiangsu Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210046, P. R. China
  • Received:2012-07-03 Revised:2012-09-06 Published:2012-09-26
  • Supported by:

    The project was supported by the National Basic Research Program of China (2009CB930600, 2012CB933301), National Natural Science Foundation of China (20833002, 20903057, 20905038, 20974046), Ministry of Education of China (IRT1148), the Priority Academic Program Development of Jiangsu Higher Education Institutions, China, Key Projects for International Cooperation, China (BZ2010043), Jiangsu Provincial Natural Science Foundation (BK2010525, BK2011750).

Abstract:

Carbon microtubes (CMTs) were prepared by the carbonization of poplar catkins according to their natural microtubular structure. The CMTs were then used as the substrate for growing carbon nanotubes (CNTs) by chemical vapor deposition. The prepared three-dimensional CMT/CNT composites were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy. Two-electrode supercapacitor cells constructed with the CMT/CNT showed a specific capacitance of 77 F·g-1 with 1 mol·L-1Li2SO4 electrolyte, which is much higher than that for CMTs (23 F·g-1).

Key words: Carbon microtube, Carbon nanotube, Poplar catkin, Biomass, Supercapacitor

MSC2000: 

  • O646