▎ 摘　　要

NOVELTY - A carbon nanostructure aggregate includes graphene nanotape which is flat cylindrical carbon nanostructure. In diffraction pattern obtained by wide-angle X-ray diffraction analysis, diffraction peaks derived from the carbon nanostructure are observed within diffraction angle of 1.5-4.5 degrees and 15-35 degrees , and the ratio of peak height (ha) from the baseline of diffraction peak (a) observed within diffraction angle (2( theta )) of 15-35 degrees with respect to peak height (hb) from the baseline of diffraction peak (b) observed within diffraction angle of 1.5-4.5 degrees is 0.21-0.99. USE - Carbon nanostructure aggregate is used for electronic device material, optical element material and electroconductive material. ADVANTAGE - The carbon nanostructure aggregate has excellent electroconductivity, thermal conductivity and mechanical characteristics. DETAILED DESCRIPTION - A carbon nanostructure aggregate comprises several carbon nanostructure and includes graphene nanotape which is flat cylindrical carbon nanostructure having tape-shaped portion in which the inner walls are close together or bonded along the full length. In diffraction pattern obtained by wide-angle X-ray diffraction analysis, diffraction peaks derived from the carbon nanostructure are observed within diffraction angle of 1.5-4.5 degrees and 15-35 degrees , and the ratio of peak height (ha) from the baseline of diffraction peak (a) observed within diffraction angle (2( theta )) of 15-35 degrees with respect to peak height (hb) from the baseline of diffraction peak (b) observed within diffraction angle of 1.5-4.5 degrees is 0.21-0.99. The diffraction pattern shows the relationship between diffraction angle (2( theta )) and value (s2x I) which is formed by multiplying square of the scattering vector (s) to diffraction intensity (I). An INDEPENDENT CLAIM is included for manufacture of carbon nanostructure aggregate, which involves coating a coating liquid (A) containing aluminum compound on a base material, drying the coating liquid (A) and forming an aluminum thin film on the base material, coating the coating liquid (B) containing an iron compound on the aluminum thin film, drying the coating liquid (B) at 50 degrees C or less, forming an iron thin film on the aluminum thin film, and obtaining a catalyst base material, and supplying mixed gas of source gas and nitrogen gas containing carbon to the catalyst base material, and making several carbon nanostructures to grow on the catalyst base material.