Patent ID: 8124227
Filing Date: 2012-02-28
Classification: B82Y,C01B,D01F,Y10S,Y10T

Abstract:
1. Carbon nanofibers comprising graphitic filaments having a hollow structure constituted by graphitic basal planes in the form of superimposed helical ribbon or ribbons wound along the carbon nanofiber axis, wherein the carbon nanofibers exhibit hysteresis behavior in the N 2 adsorption-desorption isotherm test at 77K without any previous surface activation treatment of said carbon nanofibers and the hysteresis starting point value is lower than 0.65 of the N 2 P/P 0 relative pressure, where P 0 is the N 2 saturation pressure; wherein the test conditions to carry out the hysteresis experiment are defined by the DIN 66131:1993 standard; wherein the carbon nanofibers have a graphitization index G a specific volume of mesopores greater than 0.08 cm a specific surface area is in the range from 130 to 200 m