▎ 摘　　要

NOVELTY - A layered structure is obtained by depositing nickel and tin layer on a medium layer to thickness of 90-110 mm, followed by depositing tin-nickel-graphene composite material on the medium layer, where the tin-nickel-graphene composite material comprises 4-12% tin, 5-10% coal, 30-50% oxygen and 40-50% carbon content. USE - Layered structure for use in lithium battery cathode material. ADVANTAGE - The layered structure has better circulation performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing layered structure, which involves placing a layered graphite in chloride solution, adding hypochlorous acid into the chloride solution and stirring to obtain activated graphite, placing the activated in nitrate solution and mixture solution of sulfuric acid media and/or chloride solution, washing the graphene, adding stannous sulfate and/or stannous chloride solution, followed by drying under nitrogen gas and forging at room temperature to obtain finished product.