Carbon fibers, catalyst for production of carbon fibers, and method for evaluation of carbon fibers
US9114992B2 · kind B2 · utility
1Cited by
6References
20Claims
0Family size
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Key dates
| Filing date | Aug 22, 2013 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Aug 22, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided are carbon fibers with low metal ion elution amount without subjecting to high-temperature heat treatment, in which the metal ion may be sometimes precipitated on an electrode of electrochemical devices such as batteries and capacitors to cause short-circuit. The carbon fibers comprises Fe, at least one catalyst metal selected from the group consisting of Mo and V, and a carrier; wherein the carbon fibers have an R value (ID/IG) as measured by Raman spectrometry of 0.5 to 2.0 and have an electrochemical metal elution amount of not more than 0.01% by mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.