Issue 13, 2013
From the journal:

Nanoscale

Multi-walled carbon nanotube-based carbon/carbon composites with three-dimensional network structures†

Yuguang Jin,a   Yingying Zhang,*b   Qiang Zhang,a   Rufan Zhang,a   Peng Li,a   Weizhong Qiana  and  Fei Wei*ab  

* Corresponding authors

a Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Tsinghua University, Beijing, China
E-mail: wf-dce@tsinghua.edu.cn
Fax: +86-10-6277-2051
Tel: +86-10-6278-5464

b Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
E-mail: yingingzhang@tsinghua.edu.cn
Fax: +86-10-6279-8028
Tel: +86-10-6279-8503

Abstract

Multi-walled carbon nanotube (MWCNT)-based carbon/carbon composites were fabricated by the chemical vapor infiltration of pyrolytic carbon into pre-compressed MWCNT blocks. The pyrolytic carbon was deposited on the surface of the MWCNTs and filled the gaps between the MWCNTs, which improved the connection between the MWCNTs and formed a three-dimensional network structure. The mechanical and electrical properties were improved significantly. The values of the maximum compressed deformation, maximum breaking strength, Young's modulus and energy absorption are measured as 10.9%, 148.6 MPa, 1588.6 MPa and 13.8 kJ kg−1, respectively. The conductivity reached about 204.4 S cm−1, more than 10 times larger than that of pre-compressed MWCNT blocks. After annealing at 1800 °C in vacuum, the graphitization improved remarkably. The pyrolytic carbon deposited on the surface of the MWCNTs was rearranged along the walls, and resulted in an increase of the number of walls of the MWCNTs.

Graphical abstract: Multi-walled carbon nanotube-based carbon/carbon composites with three-dimensional network structures

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Article information

DOI
https://doi.org/10.1039/C3NR01069D
Article type
Paper
Submitted
01 Mar 2013
Accepted
08 May 2013
First published
08 May 2013

Nanoscale, 2013,5, 6181-6186

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Multi-walled carbon nanotube-based carbon/carbon composites with three-dimensional network structures

Y. Jin, Y. Zhang, Q. Zhang, R. Zhang, P. Li, W. Qian and F. Wei, Nanoscale, 2013, 5, 6181 DOI: 10.1039/C3NR01069D

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