| abstract |
The present invention provides a carbon fiber which is not heat-treated at a high temperature, and which may cause short-circuiting of an electrode of an electrochemical device such as a battery or a capacitor, and the elution amount of the metal ion is small. A means for solving the problem is to provide a carbon fiber comprising at least one of a catalyst metal selected from the group consisting of Fe and Mo and V, and a metal oxide carrier, and an R value determined by Raman spectroscopy (ID) /IG) is 0.5 to 2.0, and the electrochemical metal elution amount of the catalyst metal is 0.01% by mass or less. |