▎ 摘　　要

NOVELTY - Graphene-vanadium oxide nanowire comprises nanowire core including vanadium oxide and a shell formed on a surface of the nanowire core and including graphene oxide. USE - The graphene-vanadium oxide nanowire is used in an active material, preferably positive active material of a secondary battery (all claimed). ADVANTAGE - The graphene-vanadium oxide nanowire: has simple preparation process and improved capacity stability; and provides the secondary battery having improved cycle characteristics and capacity retention rates. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing the graphene-vanadium oxide nanowire, comprising dispersing the graphene oxide in an organic solvent to prepare a graphene oxide dispersion, adding vanadium oxide to the dispersion and reacting the vanadium oxide to prepare a graphene-vanadium oxide mixed solution and heat treating the mixed solution of the graphene-vanadium oxide, where the heat treatment is performed at 300-500 degrees C, for 1-4 hours; and (2) a secondary battery comprising a positive active material including the nanowire core, electrolyte and a negative active material.