Catalyst used to form carbon fiber, method of making the same and electron emitting device, electron source, image forming apparatus, secondary battery and body for storing hydrogen

摘要

A catalyst for promoting growth of carbon fiber, which is capable of growing satisfactorily at a low temperature without needing complex process and applicable to such as electron emitting device. The catalyst used for growth of carbon fiber contains Pd and at least one element selected in the group consisting of Fe, Co, Ni, Y, Rh, Pt, La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er and Lu, in which 20~80 atm % (atomic percentage) of the selected at least one element is contained to Pd.