▎ 摘　　要

NOVELTY - The utility model relates to a preparation device positive electrode of material, positive electrode a material dispersing device and positive electrode material vibrating screen device, positive electrode material dispersing device, comprising an upper dispersing plate and a lower dispersing ring coaxially arranged and connected with each other; the projection of the upper dispersing disc in the plane of the lower dispersing ring is located in the ring of the lower dispersing ring; one surface of the lower dispersing ring close to the upper dispersing disc is provided with a composite film with function of adsorbing copper and graphene chitosan absorbing function. positive electrode material vibrating screen device, comprising a vibrating screen and positive electrode material dispersing device arranged below the feeding port of the vibrating screen and according to any one of the preceding embodiments. The utility model claims a dispersing device and a vibrating screen device, which can be used for assisting detecting the impurity metal in the material positive electrode and will not cause waste of positive electrode material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) positive electrode material dispersing device; (2) a material positive electrode screen device.