▎ 摘　　要

NOVELTY - The material has a gold nano cage uniformly attached on a fluorinated graphene nano sheet, where a grain diameter of the gold nano-cage is 30-60nm. USE - Gold nano cage/fluorinated graphene composite material. ADVANTAGE - The material has high sensitivity, low detection limit,wide linear range, better selectivity, excellent reproducibility and stability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) an electrochemical sensor based on gold nano cage/fluorinated graphene; and (2) a gold nano cage/fluorinated graphene composite material preparation method. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view of a gold nano cage/fluorinated graphene composite material.