While the pseudo-supercapacitor is a promising emerging alternative to LIBs, adjustments must be made to enhance it and achieve the engineering goal. As outlined above, MnO2 is nano-synthesized and doped with iron (Fe) in part 1. The sol-gel method will be used to create the MnO2 nano-synthesized electrode material. The sol was prepared with Fe, ethanol, double distilled water, manganese dioxide, and nitric acid. Fe and ethanol were mixed in equal volumes in the magnetic stirrer for 8 minutes. This was solution A. Solution B was prepared by putting MnO2 as the precursor and adding nitric acid to balance the pH level. Around 75 grams of MnO2 and 10-15 ml of nitric acid were used. Solution B was mixed in the magnetic stirrer for 8-10 minutes. Once both solutions were mixed, the solution was added to solution A dropwise, stirring vigorously at room temperature. The sol was left to age, dry, and shrink for 24 hours. After the sol-gel had aged for 24 hours, it was dried at 150 Celsius for 10 hours in a hot air oven. The sol-gel was then calcinated in a muffle furnace at 550 Celsius for 3 hours. The obtained sol-gel was then ground to form an MnO2 sol-gel matrix that Fe had doped, creating oxygen vacancies by doping it in Fe. Finally, the MnO2 electrode was mixed into the binder solution (PVA) with water and 70% isopropyl rubbing alcohol until the mixture had become paint-like. Figure down below showcases the steps in chronological order. Here, the sol-gel and doping process is shown and indicated.