Carbon nanotube and process for producing the carbon nanotube, and lithium ion secondary battery using the carbon nanotube
US10570016B2 · kind B2 · utility
1Cited by
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8Claims
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Key dates
| Filing date | Nov 12, 2015 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | May 24, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to carbon nanotubes that are excellent in dispersibility and a process for producing the carbon nanotubes. The carbon nanotubes according to the present invention each comprise a wall that comprises a parallel portion and a narrowed portion having a tube outer diameter that is not more than 90% of a tube outer diameter of the parallel portion. Thus, the carbon nanotubes are readily dispersible owing to a high abundance ratio of easily-breaking portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.