Fabrication of mesoporous Er doped ZnMnO₃ nanoflake via sol gel approach for energy storage application

In the present study, perovskites have lately garnered considerable interest as potential electrochemical energy storage components. The fabricated ZnMnO₃, and doped material (where, Er = 5, 10 and 15%) perovskite materials were fabricated with solgel technique and analyzed as an energy conversion system. Using scanning electron microscopy (SEM), energy dispersive X-rays spectroscopy (EDX) and X-ray diffraction (XRD), the shape, elemental and crystalline phases were determined. Using impedance spectroscopy and electrochemical capacitance analysis, the electrical capacity and impedance were determined. The Er doped ZnMnO₃ perovskite resulted in 15% Er doped ZnMnO₃ responses the specific capacitance of 1558.41 F g⁻¹ with an energy density of 54.18 Wh kg⁻¹, and power density of 250.18 W kg⁻¹ at a current density of 1.0 A g⁻¹ which was a considerable improvement over pristine and other doped samples. In addition, 15% Er doped ZnMnO₃ preserved 98.39% of its initial capacitance during 2500 charge-discharge cycles at the highest current density of 5.0 A g⁻¹15% Er doped ZnMnO₃ may maintain a significant amount of charge due to strong electrode-electrolyte contacts and anion-intercalated redox reactions.