▎ 摘　　要

NOVELTY - Preparing wearable sensor involves preparing a laser-induced graphene electrode on the surface of the polyimide film, where the laser-induced graphene electrode includes a reference electrode area, a working electrode area and a counter electrode area, taking another piece of polyimide film, cleaning ultrasonically with deionized water, drying with nitrogen gas, fixing one side on the surface of the heat-conducting copper plate, pasting polyimide tape on the other side, cutting the electrode mask by laser micro machining system, tearing off the mask, attaching to the prepared electrode surface. USE - Method for preparing wearable sensor used in self-driving sensing system for dynamic monitoring of hydrogen peroxide in plant (claimed). ADVANTAGE - The method has realized long-term dynamic monitoring of the change of H2O2 content in the plant. DETAILED DESCRIPTION - Preparing wearable sensor involves preparing a laser-induced graphene electrode on the surface of the polyimide film, where the laser-induced graphene electrode includes a reference electrode area, a working electrode area and a counter electrode area, taking another piece of polyimide film, cleaning ultrasonically with deionized water, drying with nitrogen gas, fixing one side on the surface of the heat-conducting copper plate, pasting polyimide tape on the other side, cutting the electrode mask by laser micro machining system, tearing off the mask, attaching to the prepared electrode surface, attaching reference electrode area of the laser-induced graphene electrode with a mask, coating with silver (Ag)/silver chloride (AgCl) slurry, and drying in an oven to obtain an integrated electrochemical three-electrode system with Ag/AgCl as the reference electrode, depositing platinum nanoparticle by electrochemical method in the working electrode area of the integrated electrochemical three-electrode system, adding dropwise Nafion (sodium hydroxide) solution on the surface of the deposited platinum nanoparticle layer, and drying naturally at room temperature to obtain non-enzyme electrochemical sensor for in situ detection of hydrogen peroxide (H2O2) in plant. An INDEPENDENT CLAIM is included for a wearable sensor for dynamic monitoring of H2O2in plant is obtained by the preparation method