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Fabrication of activated carbon fibers/carbon aerogels composites by gelation and supercritical drying in isopropanol

Publication ,  Journal Article
Fu, R; Zheng, B; Liu, J; Weiss, S; Ying, JY; Dresselhaus, MS; Dresselhaus, G; Satcher, JH; Baumann, TF
Published in: Journal of Materials Research
January 1, 2003

Activated carbon fiber/carbon aerogel (ACF/CA) composites were fabricated by gelling a mixture of ACF and resorcinol and furfural, followed by supercritical drying of the mixture in isopropanol. The product then went through carbonization in a nitrogen atmosphere. The fabrication conditions, such as the mass content of R-F, the content of the ACF added, and the gelation temperature, were explored. The textures and pore structures of the ACF/CA composites thus obtained were characterized using transmission electron microscopy, scanning electron microscopy, and a surface area analyzer. The mechanical properties of the samples were assessed primarily through compressive tests. The experimental results indicated that the added ACF disperses uniformly in the resulting ACF/CA composites. The carbon matrix of the ACF/CA composites also consisted of interconnected carbon nanoparticles with sizes in the range of 20 to 30 nm. The ACFs can reinforce the related carbon aerogels when they originally have low mass density and are weak in mechanical strength. When large amounts of ACF were added to the composites, the micropore area and micropore volume of the composites increased, but their external surface area decreased. The mesopore volumes and the related diameters and mesopore size distributions of the ACF/CA composites were mainly affected by the mass density of the composites. The micropore sizes of all the composites were sharply concentrated at about 0.5 nm.

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Published In

Journal of Materials Research

DOI

ISSN

0884-2914

Publication Date

January 1, 2003

Volume

18

Issue

12

Start / End Page

2765 / 2773

Related Subject Headings

  • Materials
  • 5104 Condensed matter physics
  • 4017 Mechanical engineering
  • 4016 Materials engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0204 Condensed Matter Physics
 

Citation

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Fu, R., Zheng, B., Liu, J., Weiss, S., Ying, J. Y., Dresselhaus, M. S., … Baumann, T. F. (2003). Fabrication of activated carbon fibers/carbon aerogels composites by gelation and supercritical drying in isopropanol. Journal of Materials Research, 18(12), 2765–2773. https://doi.org/10.1557/JMR.2003.0386
Fu, R., B. Zheng, J. Liu, S. Weiss, J. Y. Ying, M. S. Dresselhaus, G. Dresselhaus, J. H. Satcher, and T. F. Baumann. “Fabrication of activated carbon fibers/carbon aerogels composites by gelation and supercritical drying in isopropanol.” Journal of Materials Research 18, no. 12 (January 1, 2003): 2765–73. https://doi.org/10.1557/JMR.2003.0386.
Fu R, Zheng B, Liu J, Weiss S, Ying JY, Dresselhaus MS, et al. Fabrication of activated carbon fibers/carbon aerogels composites by gelation and supercritical drying in isopropanol. Journal of Materials Research. 2003 Jan 1;18(12):2765–73.
Fu, R., et al. “Fabrication of activated carbon fibers/carbon aerogels composites by gelation and supercritical drying in isopropanol.” Journal of Materials Research, vol. 18, no. 12, Jan. 2003, pp. 2765–73. Scopus, doi:10.1557/JMR.2003.0386.
Fu R, Zheng B, Liu J, Weiss S, Ying JY, Dresselhaus MS, Dresselhaus G, Satcher JH, Baumann TF. Fabrication of activated carbon fibers/carbon aerogels composites by gelation and supercritical drying in isopropanol. Journal of Materials Research. 2003 Jan 1;18(12):2765–2773.
Journal cover image

Published In

Journal of Materials Research

DOI

ISSN

0884-2914

Publication Date

January 1, 2003

Volume

18

Issue

12

Start / End Page

2765 / 2773

Related Subject Headings

  • Materials
  • 5104 Condensed matter physics
  • 4017 Mechanical engineering
  • 4016 Materials engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0204 Condensed Matter Physics