▎ 摘　　要

A large area graphene platform electrode (GPE) was fabricated by transferring chemical vapor deposition (CVD) grown graphene on Cu foils onto polyethylene terephthalate (PET) substrates with the aid of polymethyl methacrylate (PMMA). Cobalt hexacyanoferrate (CoHCF) was electrodeposited on GPE by cyclic voltammetry. The morphology and electrochemical properties of CoHCF/ GPE were studied by scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS) and the electrochemical measurements. The CoHCF/ GPE showed favorable sensing effect toward H2O2. A novel non-enzyme H2O2 sensor was constructed. Under the optimal experimental conditions, the proposed sensor responded to the addition of H2O2 very quickly (about 2 s) with a wide linear rang (0.005-1.2 mM) and a low detection limit (7.1 nM). This sensor was easy to be fabricated and showed excellent stability and anti-interference ability.