Synthesisand characterization..

• Main Author: Rajdev singh sandhu
• Published: 2023
• Subjects: Polypyrrole; Graphene; Supercapacitor

Growing demand in the usage of electronic products has technologically essential properties such as rapid charge/discharge cycles have allure research attention. This research is basically to observe the effect of reduced graphene oxide (rGO) is mixed with polypyrrole (PPy) and manganese (IV) oxide (MnO2) in a different ratio. These composites were prepared in the laboratory, and in the synthesis of polypyrrole, iron (III) chloride (FeCl3) was used as oxidizing agent where this synthesized polymer was used in the electrode material composites for supercapacitor application. Besides that, several of the weight percentages of the reduced graphene oxide (rGO) were added to the PPy/MnO2 composite so that it can generate a nanocomposite which is suitable for supercapacitor. There were three types of electrode samples that have prepared. Electrode for sample 1 was based on PPy/MnO2 composite. For sample 2 and sample 3, the electrode was prepared based on 5% wt rGO/PPy/MnO2 and 10% wt rGO/PPy/MnO2 nanocomposites. Moreover, the same electrolyte which is H PO /PVA was used for all samples. Furthermore, these prepared nanocomposites were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). Besides, these characterizations confirmed that the formation of homogeneous composites is having rGO which has mixed into PPy/MnO2 nanocomposites very well. Besides, the cyclic voltammetry and galvanostatic charge-discharge revealed good results with an excellent redox characteristic from these nanocomposites with having a marvelous specific capacitance of 190 F g-1. By this, the specific capacitance is highly influenced by the reduced graphene oxide (rGO) amount. After that, the symmetric device of rGO/PPy/MnO2|H3PO4| rGO/PPy/MnO2 was assembled where its energy