SILD synthesis of porous manganese oxide nanocoatings as electroactive materials for pseudocapacitors

In present work the porous nanocoating of manganese oxide were obtained via successive ionic layer deposition from aqueous solutions of potassium permanganate and DMSO. The morphology, phase and chemical composition of the synthesized nanocoatings were characterized by XRD, SEM, EDX and Raman spectroscopy. The possibility of controlled changes in the morphology of the resulting compounds was demonstrated by changing the concentration of reagents and the number of processing cycles in order to obtain optimal electrochemical characteristics. Electrodes based on nickel foam and coated with films of porous manganese oxide showed high specific capacity (1324 and 297 F/g at a current density of 1 A/g in 1 M NaOH and 1 M Na$_2$SO$_4$, respectively), both in neutral and in aqueous alkaline electrolytes.