▎ 摘　　要

NOVELTY - Preparing cobalt ferrite/graphene composite nanofibers involves taking cobalt ferrite/composite nanofibers, and dissolving cobalt ferrite nanofibers and graphene oxide in deionized water, sealing, and ultrasonicating for 1-3 hours until uniform dispersion to obtain uniform dispersion of yellow-brown mixed water-soluble. The yellow-brown mixed aqueous solution uis moved into a stainless steel reaction vessel, and then reacted at 180 degrees C for 12 hours, after reaction is completed. The mixture is cooled to room temperature, and the prepared cobalt ferrite/graphene aerogel is placed in a refrigerator and frozen to a hard solid, and then placed in a freeze dryer to freeze-dry, and then taken out to room temperature, and taken out to obtain desired product. USE - Method for preparing cobalt ferrite/graphene composite nanofibers. ADVANTAGE - The method enables to prepare cobalt ferrite/graphene composite nanofibers which has good circulation stability and excellent high-rate performance, and has wide application prospect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for following: (1) electrode, which comprises electrode material which is a cobalt ferrite/graphene composite nanofiber; and (2) lithium ion battery, which comprises anode material of lithium ion battery is cobalt ferrite/graphene composite nanofiber.