▎ 摘　　要

NOVELTY - Preparing lithium battery complex cathode material comprises (i) ultrasonically dispersing the graphene oxide and ammonium metavanadate in the mixed solution of the deionized water and glycol, (ii) subjecting the mixed solution to hydrothermal reaction under the condition of stirring in the oil bath, filtering the product, washing, and drying to obtain the precursor, and (iii) calcining the precursor under 5 % hydrogen atmosphere to obtain the vanadium trioxide nanometre sheet and graphene complex cathode material. USE - Preparing lithium battery complex cathode material. ADVANTAGE - The preparation method of lithium battery has excellent cycle stability, multiplying power performance and controllable synthesis method, is simple, low cost, which is good for scale production. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparation method of the lithium battery complex cathode material prepared by the preparation method of vanadium trioxide nanometre sheet and graphene complex cathode material; and (2) preparation method of lithium battery; and (3) lithium battery prepared by above-mentioned method. DESCRIPTION OF DRAWING(S) - The drawing shows a preparation method flow chart of vanadium trioxide nanometre sheet and graphene complex cathode material. (Drawing includes non-English language text).