Oxygen vacancies must be formed to increase the pseudo-supercapacitor potential and enhance its capabilities. Oxygen vacancies are the most common defect in metal oxides and can alter intrinsic properties, usually determined by crystal structures. However, these vacancies improve mobility, conductivity, and structural stability. The thermal motion of a cation induces these oxygen vacancies. The electrons are left when the oxygen atom is separated from the lattice position, and the charge density is improved. Hence, oxygen vacancies will form by doping the nano-synthesized MnO2 in Fe, further facilitating the ion flow. When iron is doped into the MnO2, what happens is that the carbon bonds in the MnO2 weaken, allowing for oxygen vacancies to form, and this has been indicated to increase ion conductivity and flow, enhancing the pseudo-supercapacitor properties.