Modification of nanotubes oxidation with peroxygen compounds

Patent 6872681 Issued on March 29, 2005. Estimated Expiration Date:

May 18, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Method of purifying carbon nanotubes Patent #: 5641466
Issued on: 06/24/1997
Inventor: Ebbesen, et al.

Inventors

Assignee

Hyperion Catalysis International, Inc.

Application

No. 09861370 filed on 05/18/2001

US Classes:

502/101, Making catalytic electrode, process only423/447.1Fiber, fabric, or textile

Examiners

Primary: Hendrickson, Stuart L.

Attorney, Agent or Firm

International Class

D01F009/12

Abstract

A method of chemically modifying carbon nanotubes having a diameter less than one micron comprising: contacting the nanotubes with a peroxygen compound selected from the group consisting of organic peroxyacids, inorganic peroxoacids and organic hydroperoxides, or a salt thereof, under oxidation conditions and thereby producing modified carbon nanotubes. Oxidation of the nanotubes increases the degree of dispersion of aggregates of nanotubes and aids in the disassembling of such aggregates. The dispersed nanotubes are used to prepare rigid structures and can be used in electrodes and capacitors.

Other References

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