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US 2021/0276871 A1Published application
Carbon nanotube composition and method of preparing the same
AssigneeLG Chem, Ltd.
InventorsSung Jin Kim, Jae Keun Yoon, Dong Hyun Cho
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Abstract
The present invention relates to a carbon nanotube composition including entangled-type carbon nanotubes and bundle-type carbon nanotubes, wherein the carbon nanotube composition has a specific surface area of 190 m2/g to 240 m2/g and a ratio of specific surface area to bulk density of 0.1 to 5.29.
Claims15
A carbon nanotube composition comprising entangled-type carbon nanotubes and bundle-type carbon nanotubes,
- wherein the carbon nanotube composition has a specific surface area of 190 m2/g to 240 m2/g and satisfies the following Equation 1:
- 0.1≤X/Y≤5.29 <Equation 1>
- wherein, in Equation 1, X is a number representing a specific surface area of the carbon nanotube composition, and
- Y is a number representing a bulk density of the carbon nanotube composition,
- wherein a unit of the specific surface area is m2/g, and a unit of the bulk density is kg/m3.
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A method of preparing a carbon nanotube composition, the method comprising:
- mixing an organic acid and a vanadium precursor in a molar ratio of 1:0.088 to 1:0.605 to prepare a mixture;
- mixing the mixture with a cobalt precursor to prepare a catalyst precursor;
- performing first heat treatment on aluminum hydroxide to prepare a support;
- supporting the catalyst precursor on the support and then performing second heat treatment on the resulting support to prepare a supported catalyst;
- and
- reacting the supported catalyst with a carbon-based compound.
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Dependencies are inferred from the claim text.