Preparation of three-dimensional carbon microtube/carbon nanotube composites and their application in supercapacitor

  • Wen Huang
  • , Jin Zhao
  • , Qi Kang
  • , Kai Chen Xu
  • , Zhen Yu
  • , Jian Wang
  • , Yan Wen Ma
  • , Wei Huang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

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 -1 Li 2SO 4 electrolyte, which is much higher than that for CMTs (23 F·g -1).

Original languageEnglish
Pages (from-to)2269-2275
Number of pages7
JournalWuli Huaxue Xuebao/ Acta Physico - Chimica Sinica
Volume28
Issue number10
DOIs
StatePublished - 2012
Externally publishedYes

Keywords

  • Biomass
  • Carbon microtube
  • Carbon nanotube
  • Poplar catkin
  • Supercapacitor

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