▎ 摘　　要

NOVELTY - The utility model relates to the technical field of lithium ion battery, specifically relates to a composite structure of lithium ion battery positive electrode current collector, comprising a first aluminium foil layer and a second aluminium foil layer, the first aluminium foil layer and the second aluminium foil layer are connected by high temperature resistant insulating glue layer, the side surface of the first aluminium foil layer and the second aluminium foil layer away from each other is provided with an anti-corrosion film layer, the first aluminium foil layer and the second aluminium foil layer are provided with a graphene thin film layer, the graphene thin film layer is provided with an acetylene black film layer. The composite structure of the lithium ion battery positive electrode compounded by the double-layer aluminium foil to improve the needle strength of the current collector, reducing the occurrence probability of battery heating or failure caused by the short circuit in the battery after needling, improving the safety and efficient performance of the current collector of the lithium ion battery and the quality of the electrode, It ensures the strength of the whole composite structure. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the composite structure of lithium ion battery positive electrode to claim.