CARBON NANOSTRUCTURE FOR ELECTRON EMITTER, ITS PREPARATION METHOD, AND PREPARATION METHOD OF CATHODE FOR ELECTRON EMITTER BY USEING CARBON NANOSTRUCTURE

摘要

The present invention relates to a nano carbonaceous material having a novel structure and a manufacturing method thereof and a method of manufacturing a cathode electrode plate using the same as an electron emission source negative electrode material capable of high density electron emission and low electric field electron emission performance. In the nanostructured carbonaceous material used as a raw material, the nano-carbonaceous electron emission source (1) is composed of 95% or more carbon atoms and is a carbon hexagonal mesh formed by sp ² hybridization of carbon atoms. It has a structure similar to graphite formed in a lamination of hexagonal planes, and has a distance between carbon hexagonal meshes measured by X-ray diffraction method between 0.3354 nanometers and 0.3900 nanometers. (2) diameter or width of 2.0 to 3.4 nm, (3) aspect ratio (length / diameter or width) of 2 or more, and (4) fiber axis inside Depending distance electron emission which comprises a structure which does not have a continuous hollow relates to carbonaceous Nano-structure.;In addition, in the method for producing a carbonaceous material of the electron-emitting nanostructures, (1) the active metal for the reaction gas containing at least one of Fe, Ni or Co at least partially, and (2) the active metal In order to disperse, a catalyst containing 1/100 to 1/5 parts by weight of the active metal of Mo metal, which is an inert metal to the reaction gas, is used, and (3) saturated or unsaturated linear containing at least one carbon as a carbon source. (4) to a method for producing the carbonaceous material of the electron-emitting nanostructures under a gaseous condition at a temperature of 350 to 700 degrees using hydrocarbons and carbon monoxide. 1 to 20% is kneaded with ethyl cellulose resin, thermosetting conductive resin or photosensitive resin to form a slurry paste, which is prepared by coating or printing. A method of manufacturing a cathode electrode plate of a discharge source.