Hierarchical Co3O4@PPy@MnO2 core-shell-shell nanowire arrays for enhanced electrochemical energy storage

We report supercapacitor electrode materials composed of ternary composite, i.e. Co3O4 nanowires as the core, polypyrrole (PPy) as the inner shell and MnO2 outer layer as the exodermis, and demonstrate their electrochemical performance for energy storage applications.