Modification of nanotubes oxidation with peroxygen compounds
US6872681B2 · kind B2 · utility
68Cited by
1References
38Claims
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Key dates
| Filing date | May 18, 2001 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Jan 28, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/847
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.