Preparation method and application of graphene electrode

The invention provides a preparation method and application of a graphene electrode, and relates to the technical field of graphene electrode preparation. According to the method, a graphene oxide thin film is prepared by utilizing a self-assembly behavior of graphene oxide in a solution, and then the graphene oxide thin film is combined with a graphene film, so that the hydrophilicity and chemical activity of the graphene film can be improved by utilizing the graphene oxide thin film; and the graphene electrode prepared by the method can be applied to the aspects of hydrogen production through water electrolysis, hydrogen peroxide detection, nitrate detection and the like. 本发明提供了一种石墨烯电极的制备方法及其应用，涉及石墨烯电极制备技术领域。该方法通过利用氧化石墨烯在溶液中的自组装行为，制备出氧化石墨烯薄膜，然后将其与石墨烯膜结合在一起，可利用氧化石墨烯薄膜改善石墨烯膜的亲水性和化学活性，且采用本发明制得的石墨烯电极可应用于电解水制氢气、过氧化氢检测和硝酸根检测等方面。