▎ 摘　　要

NOVELTY - An integrated supercapacitor comprises composite hydrogel film and current collector covering upper and lower surfaces of the composite hydrogel film. The composite hydrogel film is integrated by two electrodes and hydrogel electrolyte film. The electrode is conductive polymer. The conductive polymer is polymerized in situ and directly embedded into the hydrogel electrolyte layer to form integrated structure in which the electrode and the electrolyte are interlocked. USE - Integrated supercapacitor for wearable electronic device used in health monitoring and human-computer interaction application, and electric vehicles, wearable device, and in-vivo testing device. ADVANTAGE - The integrated supercapacitor has excellent electrochemical performance, high intrinsic stretchability, high efficiency, excellent self-healing ability and flexibility, and simple structure, and is economical and prepared by simple preparation process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the integrated supercapacitor, which involves preparing hydrogel electrolyte film by adding deionized water to the acrylic monomer solution, adding 3-(N,N-dimethyl-(2-(2-methylprop-2-enoyloxy)ethyl)ammonium)propane-1-sulfonate, ferric chloride and ammonium persulfate, stirring to obtain homogeneous mixed solution, injecting mixed solution into glass mold, placing in oven for thermal polymerization at 40-60degrees Celsius for 12-24 hours, gelating, soaking in electrolyte solution to obtain polyacrylic acid hydrogel electrolyte film, embedding conductive polymer on the upper and lower sides of the hydrogel electrolyte film by placing hydrogel electrolyte film in solution containing conductive polymer monomer, dopant and oxidant, stirring at room temperature for 10-20 minutes to obtain conductive polymer-polyacrylic acid composite hydrogel film, covering the composite hydrogel film with current collector to obtain an integrated supercapacitor.