| 摘要 |
PROBLEM TO BE SOLVED: To provide a carbon nanofiber having excellent electroconductivity. SOLUTION: This carbon nanofiber has 0.1-10 wt.% iron content, 1-100 nm average diameter, at least 10 average aspect ratio, 0.339-0.346 nm d002 indicating crystallinity as graphite according to X-ray diffractometry, 3-20 nm Lc and a hollow annual ring structure. A method for producing the carbon nanofiber is provided.
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