▎ 摘　　要

NOVELTY - A composite cathode material comprises 75-95 wt.%, preferably 80-95 wt.% zinc oxide, 1-20 wt.%, preferably 5-20 wt.% graphene and 0-5 wt.%, preferably 1-4 wt.% additive, and has porous structure with pore size distribution of 5 nm to 500 mu m. Zinc oxide particles are evenly dispersed in three-dimensional network of graphene. USE - Composite material is used for forming cathode of zinc-based secondary battery (claimed). ADVANTAGE - The composite cathode material has excellent physical properties and stable electrochemical properties, and can be prepared by simple process. The zinc-based secondary battery provided with the composite cathode material has excellent stable cycle performance, and high specific capacity of 400 mAh/g or more. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of composite cathode material, which involves using a solvent and an additive precursor; and (2) battery.