Flexible patch dry electrode and preparation method thereof

The invention discloses a preparation method of a flexible patch dry electrode, and the method comprises the following steps: uniformly mixing polydimethylsiloxane (PDMS) and a carbon material, carrying out ultrasonic treatment, carrying out spin coating on a substrate to obtain an electrode, drying the electrode, punching the electrode, injecting conductive silver paste into the hole, and carrying out baking and curing to obtain the flexible patch dry electrode, the carbon material accounts for 4-8wt% of the total mass of the carbon material and the polydimethylsiloxane, and the carbon material is a mixture of graphene oxide (GO) and carbon nanotubes (CNT). According to the invention, polydimethylsiloxane is adopted as a flexible substrate material, and the prepared flexible patch dry electrode has good flexibility and does not cause discomfort to a testee; the conductive net made of the carbon material is combined with the conductive silver paste, so that the electric signal conduction capability of the fle