JPH07197325A - Production of single-layer carbon nanotube - Google Patents

Production of single-layer carbon nanotube

Info

Publication number
JPH07197325A
JPH07197325A JP5337937A JP33793793A JPH07197325A JP H07197325 A JPH07197325 A JP H07197325A JP 5337937 A JP5337937 A JP 5337937A JP 33793793 A JP33793793 A JP 33793793A JP H07197325 A JPH07197325 A JP H07197325A
Authority
JP
Japan
Prior art keywords
carbon
metal
electrode
nanotube
production
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5337937A
Other languages
Japanese (ja)
Other versions
JP2699852B2 (en
Inventor
Toshiya Ichihashi
鋭也 市橋
Masashige Matsudate
政茂 松▲館▼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP5337937A priority Critical patent/JP2699852B2/en
Publication of JPH07197325A publication Critical patent/JPH07197325A/en
Application granted granted Critical
Publication of JP2699852B2 publication Critical patent/JP2699852B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To produce a single-layer carbon nanotube in high efficiency. CONSTITUTION:The production of nanotube by arc discharge is carried out by using a negative electrode 7 consisting of a carbon rod electrode and a positive electrode 10 produced by boring a hole through a carbon rod and inserting a metallic wire into the hole. The metallic wire inserted into the carbon rod enables the control of areal ratio of the carbon to metal exposed to the surface to enable the control of the amounts of carbon and metal evaporated by discharge and the mass-production of the nanotube. The yield of single- layer carbon nanotube can be improved by adding hydrogen to rare gas and hydrocarbon gas used as the carrier gas.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、黒鉛を基本構造とした
炭素からなる極微小円筒状繊維（カーボンナノチュー
ブ）の製造方法に関し、さらに詳しくは、単層円筒構造
を持ち外径が３ｎｍ以下に揃ったナノチューブを製造す
る方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing ultrafine cylindrical fibers (carbon nanotubes) made of carbon and having a basic structure of graphite. More specifically, it has a single-layer cylindrical structure and an outer diameter of 3 nm or less. The present invention relates to a method for producing uniform nanotubes.

【０００２】[0002]

【従来の技術】希ガスと炭化水素の混合ガス雰囲気中
で、炭素電極と金属電極の間にアーク放電を起こさせ、
金属と炭素を同時に蒸発させ、蒸発した金属を触媒とし
て作用させ、チューブの外径が揃った単層カーボンナノ
チューブを製造する方法が考え出されている。2. Description of the Related Art In a mixed gas atmosphere of rare gas and hydrocarbon, arc discharge is caused between a carbon electrode and a metal electrode,
A method of producing single-wall carbon nanotubes in which the metal and carbon are evaporated at the same time and the evaporated metal acts as a catalyst to produce a tube having a uniform outer diameter has been proposed.

【０００３】[0003]

【発明が解決しようとする課題】しかし、この従来の方
法では、金属電極は温度が上昇すると溶けてしまい、放
電条件を変更することで金属と炭素の割合を独立に変え
ることができない。そのため製造条件の制御が困難であ
った。However, in this conventional method, the metal electrode melts when the temperature rises, and the ratio of metal and carbon cannot be changed independently by changing the discharge conditions. Therefore, it is difficult to control the manufacturing conditions.

【０００４】本発明の目的は、単層カーボンナノチュー
ブの製造条件の制御性を向上し、収率を上げるための方
法を提供するものである。The object of the present invention is to provide a method for improving the controllability of the production conditions of single-walled carbon nanotubes and increasing the yield.

【０００５】[0005]

【課題を解決するための手段】本発明は、放電電極の一
方に炭素、他方に金属と炭素の混合物を用い、原料ガス
に炭化水素を用いてアーク放電で単層カーボンナノチュ
ーブを製造するとき、金属と炭素の混合物の電極とし
て、炭素棒に穴をあけ金属線を挿入することにより形成
されたものを用いる。またキャリアガスとして水素を添
加する。According to the present invention, when carbon is used for one of the discharge electrodes, a mixture of metal and carbon is used for the other, and hydrocarbon is used as a source gas to produce single-walled carbon nanotubes by arc discharge, As the electrode of the mixture of metal and carbon, one formed by making a hole in a carbon rod and inserting a metal wire is used. Further, hydrogen is added as a carrier gas.

【０００６】電極を本発明のような構造にすることで炭
素と金属の蒸発量の制御性が上がる。またキャリアガス
として水素を添加することにより、収率の向上がみられ
る。Controlling the evaporation amount of carbon and metal is improved by adopting the structure of the electrode as in the present invention. In addition, the yield is improved by adding hydrogen as a carrier gas.

【０００７】[0007]

【実施例】以下に本発明の実施例を図によって説明す
る。Embodiments of the present invention will be described below with reference to the drawings.

【０００８】図１は、アーク放電による単層カーボンナ
ノチューブ製造装置である。真空容器１の中に炭素棒電
極（正電極）７と金属を含む炭素棒電極（負電極）１０
を設け正電極の方を可動装置１２につなげて電極間の距
離を可変とした。正電極７は直径１センチの炭素棒、負
電極１０は炭素棒に穴をあけ金属線を挿入した直径１セ
ンチの棒である。FIG. 1 shows an apparatus for producing single-walled carbon nanotubes by arc discharge. A carbon rod electrode (positive electrode) 7 and a carbon rod electrode containing metal (negative electrode) 10 in the vacuum container 1.
The positive electrode is connected to the movable device 12 so that the distance between the electrodes can be changed. The positive electrode 7 is a carbon rod having a diameter of 1 cm, and the negative electrode 10 is a rod having a diameter of 1 cm in which a hole is made in the carbon rod and a metal wire is inserted.

【０００９】メタンガス２０Ｔｏｒｒ、ヘリウムガス１
８０Ｔｏｒｒの雰囲気で、放電電圧３０Ｖ、放電電流５
０Ａでアーク放電させることで大量の単層カーボンナノ
チューブができた。ナノチューブの太さは１〜２ｎｍで
従来と同じく揃っていた。Methane gas 20 Torr, helium gas 1
Discharge voltage 30V, discharge current 5 in an atmosphere of 80 Torr
A large amount of single-walled carbon nanotubes were produced by arc discharge at 0A. The thickness of the nanotube was 1-2 nm, which was the same as the conventional one.

【００１０】図２は図１における金属を含む電極１０の
詳細な構造を示したものである。炭素棒電極（直径１セ
ンチ）の長さ方向に１ミリの穴を４個あけ、鉄線を挿入
した。従来は電極１０として金属電極を用いていたが、
金属棒のみでは電極が溶けてしまう温度でも使用可能
で、挿入する金属線の本数により、炭素棒表面に露出す
る炭素と金属の面積比を制御できるので、金属の蒸発量
を制御できるようになる。FIG. 2 shows a detailed structure of the electrode 10 containing metal in FIG. Four 1 mm holes were made in the length direction of the carbon rod electrode (diameter 1 cm), and an iron wire was inserted. Conventionally, a metal electrode was used as the electrode 10, but
The metal rod alone can be used even at a temperature at which the electrode melts, and the area ratio of carbon and metal exposed on the surface of the carbon rod can be controlled by the number of inserted metal wires, so the evaporation amount of metal can be controlled. .

【００１１】またキャリアガスに水素をおよそ１０Ｔｏ
ｒｒ添加することで、その収率がさらに１０倍程度改善
された。Hydrogen is used as a carrier gas at about 10 To.
By adding rr, the yield was further improved about 10 times.

【００１２】[0012]

【発明の効果】以上のように本発明によれば、太さの揃
った単層カーボンナノチューブを大量に製造できる。As described above, according to the present invention, a large amount of single-walled carbon nanotubes having uniform thickness can be manufactured.

【図面の簡単な説明】[Brief description of drawings]

【図１】単層カーボンナノチューブの製造装置の概略図
である。FIG. 1 is a schematic view of an apparatus for producing single-walled carbon nanotubes.

【図２】金属線を挿入した炭素棒の構造を示す図であ
る。FIG. 2 is a diagram showing a structure of a carbon rod into which a metal wire is inserted.

【符号の説明】[Explanation of symbols]

１ 真空容器 ２ 真空排気系 ３ 真空計 ４ 真空バルブ ５ ガス供給系 ６ 圧力計 ７ 炭素棒電極 ８ アーク放電源 ９ 負導電端子 １０ 金属を含む炭素棒電極 １１ 正導電端子 １２ 可動装置 ２１ 金属線 ２２ 炭素棒電極 DESCRIPTION OF SYMBOLS 1 Vacuum container 2 Vacuum exhaust system 3 Vacuum gauge 4 Vacuum valve 5 Gas supply system 6 Pressure gauge 7 Carbon rod electrode 8 Arc discharge power source 9 Negative conductive terminal 10 Carbon rod electrode containing metal 11 Positive conductive terminal 12 Mobile device 21 Metal wire 22 Carbon rod electrode

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 放電電極の一方に炭素、他方に金属と炭
素の混合物を用い、原料ガスに炭化水素を用いたアーク
放電による単層カーボンナノチューブの製造法であっ
て、金属と炭素の混合物の電極として、炭素棒に穴をあ
け金属線を挿入することにより形成されたものを用いる
単層カーボンナノチューブの製造法。1. A method for producing single-walled carbon nanotubes by arc discharge using carbon as one of the discharge electrodes and a mixture of metal and carbon as the other, and using hydrocarbon as a raw material gas, which comprises a mixture of metal and carbon. A method for producing a single-walled carbon nanotube, which uses an electrode formed by forming a hole in a carbon rod and inserting a metal wire. 【請求項２】 キャリアガスとしてヘリウムガスと水素
ガスの混合ガスを用いる請求項１に記載の単層カーボン
ナノチューブの製造法。2. The method for producing single-walled carbon nanotubes according to claim 1, wherein a mixed gas of helium gas and hydrogen gas is used as the carrier gas.
JP5337937A 1993-12-28 1993-12-28 Method for producing single-walled carbon nanotubes Expired - Lifetime JP2699852B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5337937A JP2699852B2 (en) 1993-12-28 1993-12-28 Method for producing single-walled carbon nanotubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5337937A JP2699852B2 (en) 1993-12-28 1993-12-28 Method for producing single-walled carbon nanotubes

Publications (2)

Publication Number Publication Date
JPH07197325A true JPH07197325A (en) 1995-08-01
JP2699852B2 JP2699852B2 (en) 1998-01-19

Family

ID=18313407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5337937A Expired - Lifetime JP2699852B2 (en) 1993-12-28 1993-12-28 Method for producing single-walled carbon nanotubes

Country Status (1)

Country Link
JP (1) JP2699852B2 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09188600A (en) * 1996-01-08 1997-07-22 Agency Of Ind Science & Technol Carbon whisker and its production
US6149775A (en) * 1998-03-16 2000-11-21 Futaba Denshi Kogyo Kabushiki Kaisha Method for preparing single layer carbon nano-tube
JP2001192205A (en) * 2000-01-11 2001-07-17 Ise Electronics Corp Method and device for manufacturing carbon nano-tube
WO2001079113A1 (en) * 2000-04-18 2001-10-25 Sony Corporation Method and system for producing fullerene
KR20020017164A (en) * 2000-08-29 2002-03-07 김성근 Apparatus and method of producing nanotube
WO2002070406A1 (en) * 2001-03-01 2002-09-12 Sony Corporation Device and method for manufacture of carbonaceous material
WO2002070405A1 (en) * 2001-03-01 2002-09-12 Sony Corporation Device and method for manufacture of carbonaceous material
US6455021B1 (en) * 1998-07-21 2002-09-24 Showa Denko K.K. Method for producing carbon nanotubes
WO2005050682A1 (en) * 2003-11-19 2005-06-02 Korea Institute Of Science And Technology Method for preparing electrode for electrochemical capacitor
US6970162B2 (en) 2001-08-03 2005-11-29 Canon Kabushiki Kaisha Image display apparatus
JP2006508008A (en) * 2002-11-15 2006-03-09 マックギル ユニヴァーシティー Method for producing carbon nanotubes using DC non-transfer thermal plasma torch
JP2006265006A (en) * 2005-03-22 2006-10-05 National Univ Corp Shizuoka Univ Carbon nanotube production method and its device
KR100664347B1 (en) * 2001-03-12 2007-01-02 후다바 덴시 고교 가부시키가이샤 Method for preparing nano-carbon and nano-carbon prepared by such method and composite material or mixed material containing nano-carbon and metal fine particle, apparatus for preparing nano-carbon, method for patterning nano-carbon and nano-carbon base material patterned by the use of such method, as well as electron emission source using such patterned nano-carbon base material
JP2007070158A (en) * 2005-09-06 2007-03-22 Univ Nagoya Carbon nanotube assembly and method for producing the same
JP2007145685A (en) * 2005-11-29 2007-06-14 Univ Meijo Method for production of carbon nanotube and method for purification of the same
WO2007125923A1 (en) 2006-04-24 2007-11-08 National Institute Of Advanced Industrial Science And Technology Single-walled carbon nanotube, carbon fiber aggregate containing the single-walled carbon nanotube, and method for production of the single-walled carbon nanotube or the carbon fiber aggregate
US9067793B2 (en) 2005-11-29 2015-06-30 Meijo University Method for production of carbon nanotube and method for purification of the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8454923B2 (en) 2009-06-10 2013-06-04 Carbon Solutions, Inc. Continuous extraction technique for the purification of carbon nanomaterials
US8449858B2 (en) 2009-06-10 2013-05-28 Carbon Solutions, Inc. Continuous extraction technique for the purification of carbon nanomaterials

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07165406A (en) * 1993-10-19 1995-06-27 Sony Corp Production of carbon tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07165406A (en) * 1993-10-19 1995-06-27 Sony Corp Production of carbon tube

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09188600A (en) * 1996-01-08 1997-07-22 Agency Of Ind Science & Technol Carbon whisker and its production
US6149775A (en) * 1998-03-16 2000-11-21 Futaba Denshi Kogyo Kabushiki Kaisha Method for preparing single layer carbon nano-tube
US6455021B1 (en) * 1998-07-21 2002-09-24 Showa Denko K.K. Method for producing carbon nanotubes
JP2001192205A (en) * 2000-01-11 2001-07-17 Ise Electronics Corp Method and device for manufacturing carbon nano-tube
US6855231B2 (en) 2000-04-18 2005-02-15 Sony Corporation Method and system for production fullerene
WO2001079113A1 (en) * 2000-04-18 2001-10-25 Sony Corporation Method and system for producing fullerene
KR20020017164A (en) * 2000-08-29 2002-03-07 김성근 Apparatus and method of producing nanotube
WO2002070406A1 (en) * 2001-03-01 2002-09-12 Sony Corporation Device and method for manufacture of carbonaceous material
WO2002070405A1 (en) * 2001-03-01 2002-09-12 Sony Corporation Device and method for manufacture of carbonaceous material
US6794599B2 (en) 2001-03-01 2004-09-21 Sony Corporation Device and method for manufacture of carbonaceous material
KR100664347B1 (en) * 2001-03-12 2007-01-02 후다바 덴시 고교 가부시키가이샤 Method for preparing nano-carbon and nano-carbon prepared by such method and composite material or mixed material containing nano-carbon and metal fine particle, apparatus for preparing nano-carbon, method for patterning nano-carbon and nano-carbon base material patterned by the use of such method, as well as electron emission source using such patterned nano-carbon base material
US6970162B2 (en) 2001-08-03 2005-11-29 Canon Kabushiki Kaisha Image display apparatus
US7283131B2 (en) 2001-08-03 2007-10-16 Canon Kabushiki Kaisha Image display apparatus
JP2006508008A (en) * 2002-11-15 2006-03-09 マックギル ユニヴァーシティー Method for producing carbon nanotubes using DC non-transfer thermal plasma torch
WO2005050682A1 (en) * 2003-11-19 2005-06-02 Korea Institute Of Science And Technology Method for preparing electrode for electrochemical capacitor
JP2006265006A (en) * 2005-03-22 2006-10-05 National Univ Corp Shizuoka Univ Carbon nanotube production method and its device
JP2007070158A (en) * 2005-09-06 2007-03-22 Univ Nagoya Carbon nanotube assembly and method for producing the same
JP2007145685A (en) * 2005-11-29 2007-06-14 Univ Meijo Method for production of carbon nanotube and method for purification of the same
US9067793B2 (en) 2005-11-29 2015-06-30 Meijo University Method for production of carbon nanotube and method for purification of the same
WO2007125923A1 (en) 2006-04-24 2007-11-08 National Institute Of Advanced Industrial Science And Technology Single-walled carbon nanotube, carbon fiber aggregate containing the single-walled carbon nanotube, and method for production of the single-walled carbon nanotube or the carbon fiber aggregate

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