▎ 摘　　要

NOVELTY - A supercapacitor includes an electrode layer (e1), an electrolyte layer and an electrode layer (e2). The layers (e1) and (e2) are prepared from polyvinyl alcohol, conductive material and energy storage material. The electrolyte is prepared from polyvinyl alcohol. The polyvinyl alcohol in the layers (e1) and (e2) and electrolyte layer is crosslinked using crosslinking agent on the interface and inner surface of the layers (e1) and (e2), and electrolyte layer. USE - Supercapacitor used for producing flexible electronic devices and wearable electronic devices (all claimed) such as flexible displays and wearable sensors. ADVANTAGE - The supercapacitor has excellent mechanical property, deformation resistance and flexibility, can effectively fuse the interface between the electrode and electrolyte to reduce interfacial contact resistance to improve area specific capacity and can construct excellent cross-linking electrode, electrolyte and electrode interface to strengthen the interfacial interaction to improve bending resistance and deformation resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the supercapacitor, which (S1) mixing and stirring the polyvinyl alcohol, conductive material, surfactant and solvent (s1) to obtain a mixed solution, removing the solvent (s1) by heat treatment to obtain conductive films (f1) and (f2), mixing and stirring the polyvinyl alcohol and solvent (s2) to obtain polyvinyl alcohol solution, removing the solvent (s2) by heat treatment to obtain a polyvinyl alcohol film, (S2) swelling the films (f1) and (f2) and the polyvinyl alcohol film using solvent (s3), assembling the film (f1), polyvinyl alcohol film and film (f2), removing the solvent (s3) by hot-pressing to obtain structural film (i), (S3) crosslinking between the film (i) and a crosslinking agent to obtain a structure film (ii), (S4) electro-depositing an energy storage materials on both surfaces of the film (ii) and soaking in an aqueous electrolyte solution.