(537b) 3- D Nanostructures for Next Generation Supercapacitor Application

One-dimensional array architecture such as nanotubes and nanowires has been widely used to enhance the energy storage devices. Supercapacitors have raised the attention over the past decade due to their high-power density, energy density and long life cycle compare to secondary batteries and conventional electrical double-layer capacitors. In this study we are fabricating 3-D structure (Hierarchical) MnO₂ nanowire with high surface area, low toxicity, high abundance, low cost, and environmental friendliness to increase the power density of supercapacitors. Al with less than 1 atom % Cu will be used to form a 3-D porous template during the anodization process. Presence of Cu impurities in an Al film introduces horizontal pores interconnecting the vertically aligned pore structure of the anodized aluminum oxide (AAO) template.