▎ 摘　　要

NOVELTY - The film has a uniform bottom layer arranged with a nano graphene layer and a nano-cobalt surface layer. Thickness of the nano graphene layer is about 4000nm to 6000nm. Thickness of a nano-hydroxide table layer is about 50nm to 10nm. The nano-cobalt hydroxide layer is arranged with the uniform bottom layer that is matched with the nano graphene layer. A film body is formed with an electrochemical sensor that is provided with a chemical sensor and a hydrogen peroxide sensor. USE - Nano-cobalt-graphene composite film. ADVANTAGE - The film is environment-friendly, simple in structure and convenient to operate, and has wide range of applications, and increases significant limit detecting efficiency of a nanometer electrochemical sensor field and sensitivity of a specific substance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a nano-cobalt-graphene composite film manufacturing method. DESCRIPTION OF DRAWING(S) - The drawing shows a photograph view of a nano-cobalt-graphene composite film.