Carbon fibrous structure
AssigneeBussan Nanotech Research Institute Inc.
InventorsTakayuki Tsukada, Jiayi Shan
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Abstract
The present invention provides a carbon fibrous structure comprising a three dimensional network of carbon fibers, said carbon fibers each having an outside diameter of 15-100 nm, and said fibrous structure comprising a granular part with which said carbon fibers are bound in a state that said carbon fibers extend outwardly from the granular part, the granular part being produced in a growth process of the carbon fibers, and a method for making the same.
Claims38
A carbon fibrous structure comprising a three dimensional network of carbon fibers, said carbon fibers each having an outside diameter of 15-100 nm, and said fibrous structure comprising a granular part with which said carbon fibers are bound in a state that said carbon fibers extend outwardly from the granular part, the granular part being produced in a growth process of the carbon fibers.
A method for forming a carbon fibrous structure having a granular core to which a plurality of carbon fibers are attached, the method comprising:
- heating a mixture of a carbon source and a catalyst at a constant temperature in a range of 800-1300° C. to produce a first intermediate, wherein the carbon source comprises at least two carbon compounds having different decomposition temperatures or the carbon source comprises a carbon compound that can produce, in the heating, at least two carbon components having different decompositions temperatures;
- heating the first intermediate at a constant temperature in a range of 800-1200° C. to produce a second intermediate;
- and
- heating the second intermediate at a constant temperature in a range of 2400-3000° C. to produce the carbon fibrous structure.
Dependencies are inferred from the claim text.