Lg Chem, Ltd

Jae Keun Yoon

Sung Jin Kim

Dong Hyun Cho

Kyung Yeon Kang

Jin Do Kim

Og Sin Kim

Tae Hyung Kim

Hyun Woo Park

Byung Yul Choi

Hyun Joon Kang

Duk Ki Kim

Hyo Sang You

The present invention relates to entangled-type carbon nanotubes which have a bulk density of 31 kg/mto 85 kg/mand a ratio of tapped bulk density to bulk density of 1.37 to 2.05, and a method for preparing the entangled-type carbon nanotubes.

Entangled-type carbon nanotubes and method for preparing the same

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 m/g to 240 m/g and a ratio of specific surface area to bulk density of 0.1 to 5.29.

Carbon nanotube composition and method of preparing the same

The present invention relates to a bundle-type carbon nanotube which has a bulk density of 25 to 45 kg/m, a ratio of the bulk density to a production yield of 1 to 3, and a ratio of a tap density to the bulk density of 1.3 to 2.0, and a method for preparing the same.

Bundle-type carbon nanotubes and method for preparing the same

In the present invention, by dry pulverizing carbon nanotubes to control wettability index of the carbon nanotubes, the maximum concentration of the carbon nanotubes that can be added to the dispersion solvent can be increased and the workability of the carbon nanotube dispersion can be improved. Further, from this, it is possible to more easily predict the maximum concentration of the carbon nanotubes that can be added to the dispersion solvent.

Method for producing carbon nanotube dispersion with improved workability

According to the present invention, a carbon nanotube structure can be manufactured by merely a simple process in which carbon nanotubes are pulverized and mixed in a dispersion solvent without a dispersant, followed by freezing, and then the dispersion solvent is removed. Such a method does not require a dispersant and a binder so that the manufactured carbon nanotube structure can be composed of only carbon nanotubes, and does not depend on the other additives to form the carbon nanotube structure so that there is little possibility of damage and contamination of the structure during the collection procedure of the structure after the formation of the structure.

Carbon nanotube structure and method for manufacturing same

Disclosed is a method for manufacturing a homogeneous supported catalyst for carbon nanotubes. Advantageously, the method induces deep impregnation of a catalyst in micro pores of a support by using high-temperature aging impregnation, thus providing a high CNT yield.

Method for manufacturing homogeneous supported catalyst for carbon nanotubes

Disclosed are carbon nanotubes and a method for manufacturing the same. Advantageously, the method provides a high yield of potato or sphere-shaped non-bundled carbon nanotubes having a bulk density of 80 to 250 kg/m, an ellipticity of 0.9 to 1.0 and a particle diameter distribution (Dcnt) of 0.5 to 1.0 using a two-component carbon nanotube catalyst comprising a catalyst component and an active component.

Carbon nanotubes and method for manufacturing the same

Disclosed are carbon nanotubes and a method for manufacturing the same wherein the carbon nanotubes (CNTs) which comprise a three-component carbon nanotube catalyst containing a catalytic component and an active component and have a potato or spherical shape with a particle diameter distribution (Dcnt) of 0.5 to 1.0 can be manufactured at a high yield using an impregnated supported catalyst by simultaneously removing activity and a fine powder of the impregnated supported catalyst in an attempt to solve a drawback of conventional impregnation methods for producing CNTs, namely, the difficulty in improving a yield of CNTs.

Growing community of inventors

Daejeon, South Korea

Jae Keun Yoon