THE METHOD FOR MANUFACTURING THE HIGH CONDUCTIVE CARBON NANO FIBER AND THE CARBON NANO FIBER MADE THEREBY

• Main Authors: YUN, SEOK MIN, JUNG, HAN GI
• Format: Patent
• Language: English; Korean
• Published: 26.11.2014
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS; ELECTRICITY; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES; INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTIOND, RELATING TOTEXTILES; LAUNDERING; MECHANICAL FINISHING OF YARNS OR ROPES; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SPINNING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS; WARPING OR BEAMING; YARNS; YARNS OR THREADS

The present invention relates to a method for manufacturing highly conductive PAN/Pitch composite fibers, by which electrodes with high electrical conductivity and an increased capacity can be manufactured via pyrolytic carbon doping and surface-selective graphitization on the surface of PAN or Pitch-based fibers; and to highly conductive PAN/Pitch carbon composite fibers manufactured thereby. The method for manufacturing highly conductive PAN/Pitch carbon composite fibers according to the present invention comprises the steps of 1) manufacturing a raw solution by dissolving acrylonitrile; 2) manufacturing carbon nanofibers by spinning the raw solution; 3) treating the carbon nanofibers with acid; 4) coating the carbon nanofibers, which has been treated with acid, with carbon via pyrolysis; and 5) graphitizing the carbon-coated carbon nanofibers.