Direct Preparation of Metal Ions‐Doped Manganese Oxide by Cyclic Voltammetry

In this work, for the first time, copper ions(II) and cobalt ions(II) were successfully electrodepositioned into manganese oxide by cyclic voltammetry (CV), respectively. The results obtained from energy dispersive X‐ray analysis (EDX) testified that copper ions and cobalt ions were doped into manganese oxide, and the images, taken from scan electron spectroscopy (SEM) also proved that the morphology of the resultant MnO₂ was altered by the doped metal ions to some extent. Interestingly, specific capacitance, obtained by cyclic voltammograms (CVs), for the metal ions‐doped MnO₂ exhibited a higher value compared to the non‐doped MnO₂. Developing a novel and simple method to generate the metal ions‐doped MnO₂ to improve the characteristics of MnO₂ is the main contribution of this work.