▎ 摘　　要

NOVELTY - Flexible super capacitor has microcrystalline fiber anode gel film with graphene surface and micro crystalline fiber cathode gel membrane with zinc-based surface. The graphene surface and the zinc-based surface are facing outward, and the microcrystalline fiber composite current collector gel film with the aluminum film surface is wrapped and laminated. The laminated gel film is pressed onto the protective film by a dry film laminator, and the anode gel film is obtained by organically compounding ionic liquid-modified microcrystalline cellulose and hydroxylated graphene through hydrogen bonding. The cathode gel film and the composite current collector gel film are obtained by modifying the ionic liquid to modify the microcrystalline cellulose organic composite aluminum film and the zinc base, respectively, by means of electrodeposition. The ionic liquid is 1-butyl-3-methylimidazolium diethyl phosphate. USE - Flexible super capacitor, e.g. double-layer capacitor, pseudo-capacitor and hybrid super capacitor, for use in a wearable electronic, a new energy technology and a smart device. ADVANTAGE - The flexible super capacitor endows the anode, cathode and current collector with good bending performance, and improving the folding performance and durability of the capacitor, and has good conductive performance, good organic composite with the electrode, solving the problem of bad adhesion. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of flexible super capacitor, which involves: (1) adding tributyl phosphate into the reaction flask, stirring and heating while maintaining the temperature, adding N-methylimidazole dropwise to tributyl phosphate, keep stirring for 2-4 hours at the temperature to obtain ionic liquid, and adding microcrystalline cellulose dissolved in ionic liquid, keep stirring at the temperature for 4-5 hours, to obtain the ionic liquid-modified microcrystalline cellulose, for use; (2) taking the ionic liquid-modified microcrystalline cellulose in a reaction flask, adding aluminum chloride in batches under constant stirring in a nitrogen atmosphere, after mixing unifomly, and cooling with an ice-water bath, conducting constant current electrolytic electrodeposition of aluminum film, and after drying, obtain microcrystalline fiber composite current collector gel film with aluminum film surface; (3) taking the ionic liquid-modified microcrystalline cellulose in a reaction flask, add zinc chloride in batches under constant stirring in a nitrogen atmosphere, and after mixing unifomly, cooling with an ice-water bath, and performing constant current electrolytic electrodeposition of zinc, after drying to obtain a microcrystalline fiber cathode gel film with a zinc-based surface; (4) taking the ionic liquid-modified microcrystalline cellulose in a reaction flask, adding the hydroxylated graphene to the ionic liquid-modified microcrystalline cellulose in batches under constant stirring in a nitrogen atmosphere, and ultrasonically treating and mixing unifomly, pouring the mixture into a flat-bottomed tray container, treating with a horizontal shaker and left to stand for 1 hour, and after drying, obtain a microcrystalline fiber anode gel film with a graphene surface; (5) attaching microcrystalline fiber anode gel film with a graphene surface and a microcrystalline fiber cathode gel film with a zinc-based surface, facing the graphene surface and the zinc-based surface outward, and then attaching the aluminum film, wrapping and bonding the microcrystalline fiber composite current collector gel film with the aluminum film surface, and pressing the bonded gel film onto the protective film by a dry film laminator to obtain a flexible super capacitor.