A boron nitride particle having a shell part formed of boron nitride and a hollow part surrounded by the shell part, in which a density of the boron nitride on an inside of the shell part is higher than a density of the boron nitride on an outside of the shell part. A resin composition containing the boron nitride particle and a resin. A method for producing a resin composition including a step of preparing the boron nitride particle and a step of mixing the boron nitride particle with a resin.

The present relates to a carbon material having a 3D structure and made of graphene oxide and carbon nanotubes, characterized in that the 3D structure consists in that the carbon nanotubes are located with some agglomeration between the graphene oxide layers so as to extend the spacing between the graphene oxide layers.

Carbon nanotube (CNT) hybrid materials and methods of making such materials. A carbon nanotube (CNT) hybrid powder material includes a mesh of CNTs intimately interspersed with particles of a second material. In an example the material includes a blend that itself includes particles of a metal oxide supported catalyst and particles of a second material, and a mesh of CNTs is grown on the supported catalyst in the blend. The mesh of CNTs is effective to disperse the particles of the second material.

Applicability to a composite material with high purity and high strength, and a material requiring high conductivity or high thermal conductivity is enhanced. The present invention relates to a multi-walled carbon nanotube having two or more tubes of a graphene sheet where carbon atoms are arranged in a hexagonal honeycomb form, coaxially, wherein a diameter of an outermost wall based on observation of an image by a transmission electron microscope is 3 nm or more and 15 nm or less, and a length based on observation of an image of a scanning electron microscope is 1.0 mm or more, an aggregate of multi-walled carbon nanotubes and a method for preparing the multi-walled carbon nanotube.

Carbon nanotubes and dispersions containing carbon nanotubes are provided. Methods of processing carbon nanotubes and dispersions containing purified carbon nanotubes are provided.

The present disclosure relates to a multilayer electrode for a secondary battery. The multilayer electrode for a secondary battery includes: an electrode current collector; a first mixture layer including an active material, a binder, and a single-walled carbon nanotube, the first mixture layer being formed on at least one surface of the electrode current collector; and a second mixture layer including an active material, a binder, and a multi-walled carbon nanotube, the second mixture layer being formed on the first mixture layer. According to the present disclosure, by improving the uniformity of the distribution of the conductive material in the electrode mixture layer, it is possible to prevent the resistance from increasing, and as a result, it is possible to improve the output characteristics of the secondary battery.

The present invention is directed to additive manufacturing compositions and methods for producing additive manufacturing composite blends with oxidized discrete carbon nanotubes with dispersion agents bonded to at least one sidewall of the oxidized discrete carbon nanotubes. Such compositions are especially useful when radiation cured, sintered or melt fused.

The present application pertains to dispersions comprising oxidized, discrete carbon nanotubes and high-surface area carbon nanotubes. The oxidized, discrete carbon nanotubes comprise an interior and exterior surface, each surface comprising an interior surface oxidized species content and an exterior surface oxidized species content. The interior surface oxidized species content differs from the exterior surface oxidized species content by at least 20%, and as high as 100%. The high-surface area nanotubes are generally single-wall nanotubes. The BET surface area of the high-surface area nanotubes is from about 550 m.sup.2/g to about 1500 m.sup.2/g according to ASTM D6556-16. The aspect ratio is at least about 500 up to about 6000. The dispersions comprise from about 0.1 to about 30% by weight nanotubes based on the total weight of the dispersion.

The present disclosure relates to a multilayer electrode for a secondary battery. The multilayer electrode for a secondary battery includes: an electrode current collector; a first mixture layer including an active material, a binder, and a single-walled carbon nanotube, the first mixture layer being formed on at least one surface of the electrode current collector; and a second mixture layer including an active material, a binder, and a multi-walled carbon nanotube, the second mixture layer being formed on the first mixture layer. According to the present disclosure, by improving the uniformity of the distribution of the conductive material in the electrode mixture layer, it is possible to prevent the resistance from increasing, and as a result, it is possible to improve the output characteristics of the secondary battery.

The present relates to a carbon material having a 3D structure and made of graphene oxide and carbon nanotubes, characterized in that the 3D structure consists in that the carbon nanotubes are located with some agglomeration between the graphene oxide layers so as to extend the spacing between the graphene oxide layers