2014
DOI: 10.1038/ncomms4848
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Abstract: Macroscopic fibres made up of carbon nanotubes exhibit properties far below theoretical predictions and even much lower than those for conventional carbon fibres. Here we report improvements of mechanical and electrical properties by more than one order of magnitude by pressurized rolling. Our carbon nanotubes self-assemble to a hollow macroscopic cylinder in a tube reactor operated at high temperature and then condense in water or ethanol to form a fibre, which is continually spooled in an open-air environmen… Show more

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Cited by 237 publications
(199 citation statements)
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“…Tuning of CNTs alignment and packing density in macroscopic structure is the basis of achieving diverse mechanical and functional properties, such as transparent thin films, [1,2] stretchable conductors, [3] solar energy harvesting devices, [4,5] supercapacitors and batteries, [6] integrated circuits, [7] water desalinating and purifying membranes, [8] etc. [22][23][24][25] These CNT films showed tensile strength from 1.5 to 5.5 GPa and tensile modulus from 45 to 266 GPa, [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] meanwhile the films exhibited excellent electrical conductivity of 2.2 • 10 6 S/m [18] , thermal conductivity of 766 W/mK [27] and some other unique properties. As a two-dimensional macroscopic structure, CNT film could avoid random aggregation and difficult dispersion of nanotubes, providing non-damaged native structure and high-load of nanotubes.…”
Section: Introductionmentioning
confidence: 99%
“…Tuning of CNTs alignment and packing density in macroscopic structure is the basis of achieving diverse mechanical and functional properties, such as transparent thin films, [1,2] stretchable conductors, [3] solar energy harvesting devices, [4,5] supercapacitors and batteries, [6] integrated circuits, [7] water desalinating and purifying membranes, [8] etc. [22][23][24][25] These CNT films showed tensile strength from 1.5 to 5.5 GPa and tensile modulus from 45 to 266 GPa, [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] meanwhile the films exhibited excellent electrical conductivity of 2.2 • 10 6 S/m [18] , thermal conductivity of 766 W/mK [27] and some other unique properties. As a two-dimensional macroscopic structure, CNT film could avoid random aggregation and difficult dispersion of nanotubes, providing non-damaged native structure and high-load of nanotubes.…”
Section: Introductionmentioning
confidence: 99%
“…Unfortunately, for CNT fibers, all these properties are not used up to ≈10%. For example, the tensile strength for a meter‐long CNT fiber was just ≈3–5.5 GPa (there have also been short samples as strong as ≈10 GPa), the electrical conductivity for a neat CNT fiber was up to 4.6 × 10 5 –2.9 × 10 6 S m −1 , (a special case was up to 8.5 × 10 6 S m −1 just for a segment of CNT fiber), and the thermal conductivity was several hundred W m −1 K −1 even for the apparent value (with considering the contribution of thermal diffusion) …”
Section: Introductionmentioning
confidence: 99%
“…Some strategies had been proposed to significantly reduce their resistances by lengthening the 1D nanomaterials [47,54] or making a pressurized rolling post-treatment. [55] In addition, the combination of structural design with novel, intrinsically stretchable materials could enable almost constant electrical properties of electrodes during stretching.…”
Section: Wwwadvancedsciencenewscommentioning
confidence: 99%