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Strong, Conductive, Lightweight, Neat Graphene Aerogel Fibers with Aligned Pores

Xu, Zhen, Zhang, Yuan, Li, Peigang, Gao, Chao·2012·ACS Nano
DOI 10.1021/nn3021772
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Abstract

Liquid crystals of anisotropic colloids are of great significance in the preparation of their ordered macroscopic materials, for example, in the cases of carbon nanotubes and graphene. Here, we report a facile and scalable spinning process to prepare neat "core-shell" structured graphene aerogel fibers and three-dimensional cylinders with aligned pores from the flowing liquid crystalline graphene oxide (GO) gels. The uniform alignment of graphene sheets, inheriting the lamellar orders from GO liquid crystals, offers the porous fibers high specific tensile strength (188 kN m kg(-1)) and the porous cylinders high compression modulus (3.3 MPa). The porous graphene fibers have high specific surface area up to 884 m(2) g(-1) due to their interconnected pores and exhibit fine electrical conductivity (2.6 × 10(3) to 4.9 × 10(3) S m(-1)) in the wide temperature range of 5-300 K. The decreasing conductivity with decreasing temperature illustrates a typical semiconducting behavior, and the 3D interconnected network of 2D graphene sheets determines a dual 2D and 3D hopping conduction mechanism. The strong mechanical strength, high porosity, and fine electrical conductivity enable this novel material of ordered graphene aerogels to be greatly useful in versatile catalysts, supercapacitors, flexible batteries and cells, lightweight conductive fibers, and functional textiles.

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Metadata

Authors
Xu, Z., Zhang, Y., Li, P., & Gao, C.
Venue
ACS Nano
Publisher
American Chemical Society (ACS)
Published
2012-07-23
Volume
6
Issue
8
Pages
7103-7113
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
DOI
10.1021/nn3021772
OpenAlex
W1979043813
Cited by
681
References
5
FWCI
19.40
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Strong, Conductive, Lightweight, Neat Graphene Aerogel Fibers with Aligned Pores. https://app.cochat.ai/papers/10.1021/nn3021772
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Xu, Z., Zhang, Y., Li, P., & Gao, C. (2012). Strong, Conductive, Lightweight, Neat Graphene Aerogel Fibers with Aligned Pores. ACS Nano. https://doi.org/10.1021/nn3021772

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