CARBON NANOBALLOON STRUCTURE AND METHOD FOR PREPARATION THEREOF, AND ELECTRON RELEASING ELEMENT

Title:

CARBON NANOBALLOON STRUCTURE AND METHOD FOR PREPARATION THEREOF, AND ELECTRON RELEASING ELEMENT

Document Type and Number:

WIPO Patent Application WO/2005/095275

Kind Code:

A1

Abstract:

A carbon nanoballoon structure having a hollow structure of a relatively large closed space, characterized in that it comprises a hollow structure wherein graphite layers are bound and arranged in such a manner that they form a curved surface as a whole; and a method for preparing the carbon nanoballoon structure with ease and stability, which comprises heating a soot formed by an arc discharge using a carbon electrode or by the laser irradiation to a carbon material or heating a carbon black having a specific surface area of 1000 m²/g or more and a primary particle diameter of 20 nm or more, to a high temperature in an inert gas atmosphere.

Inventors:

TAKIKAWA HIROFUMI (JP)
KONDO AKIRA (JP)
YOSHIKAWA KAZUO (JP)
ITOH SHIGEO (JP)

Application Number:

PCT/JP2005/006441

Publication Date:

October 13, 2005

Filing Date:

March 25, 2005

Export Citation:

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Assignee:

TAKIKAWA HIROFUMI (JP)
TOKAI CARBON KK (JP)
FUTABA DENSHI KOGYO KK (JP)
KONDO AKIRA (JP)
YOSHIKAWA KAZUO (JP)
ITOH SHIGEO (JP)

International Classes:

B82B1/00; C01B31/02; H01J1/304; (IPC1-7): C01B31/02

Domestic Patent References:

WO2003057624A1	2003-07-17
WO1997018575A1	1997-05-22

Foreign References:

JP2003300713A	2003-10-21
JP2002326032A	2002-11-12
JP2004060130A	2004-02-26
JP2001048508A	2001-02-20
JP2001064004A	2001-03-13
US5985232A	1999-11-16

Other References:

CHEM. PHYS. LETT., vol. 204, 1993, pages 227
See also references of EP 1731483A4

Attorney, Agent or Firm:

Fukuda, Yasuo (1-16 Kanda Suda-ch, Chiyoda-ku Tokyo 41, JP)

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