| Supercapacitor is a kind of between traditional charger and rechargeable batteries of a new type of pollution-free energy storage device,compared with conventional capacitors,supercapacitors with larger capacity and specific energy,wide working temperature range,and compared with the battery,it has higher than the power and the very long service life,etc,so the super capacitor application prospect.The electrode materials of supercapacitors are the key to the performance of supercapacitors.The electrode materials of high specific capacitors have been the focus of scientific researchers.At the same time,in order to meet the needs of modern people’s life,the electrode materials with flexible,mechanical properties and high specific capacitors have made great achievements.However,there are still some problems in high-capacity or flexible ultracapacitors.For example,the capacitance of ultracapacitors is relatively low,the preparation method of flexible ultracapacitors is not simple enough,the cost is high,and the electrochemical properties cannot be stable and the material’s own strength or mechanical properties are poor when the material is flexible.In this paper,the capacitance of supercapacitors and the electrode materials with flexible and mechanical properties are improved from the perspectives of material selection,composite structure design and simplified preparation process.This paper mainly carries out the following three aspects of research:（1）go was prepared by improved Hummers method,and Mo S2/graphene composites with flower-bulb structure were prepared by hydrothermal method.By in-situ polymerization,polypyrrole was adsorbed on molybdenum disulphide/graphene composites to prepare molybdenum disulphide/graphene@polypyrrole composites.Finally,the composition,structure and electrochemical properties of the materials were analyzed and characterized.（2）the coating method using modified Hummers of graphene oxide prepared by coating the fiber paper and water thermal reduction oxidation graphene@flexible electrode of graphene oxide fiber paper,polypyrrole load by in situ polymerization in graphene@fiber paper flexible electrode preparation for graphene/polypyrrole@fiber paper flexible electrode.Finally,the composition,structure,flexibility,mechanical properties and electrochemical properties of the materials were analyzed and characterized.（3）adopt the method of heating dissolved preparation of PVA（polyvinyl alcohol,PVA）aqueous solution,using the method of blending preparation of poly（vinyl alcohol）/graphene oxide/pyrrole mixture,by in situ polymerization at low temperature in situ polymerization of pyrrole monomer mixture after freezing and thawing by poly（vinyl alcohol）/graphene oxide/polypyrrole hydrogel,soaked the gel in KI mixed with HCl solution of poly（vinyl alcohol）/graphene/polypyrrole hydrogel.Finally,the structure,flexibility,compression recovery and electrochemical properties of the materials were analyzed and characterized. |
