This article investigates the physicochemical properties of vanadium pentoxide (V2O5) prepared by anodic electrodeposition onto two nanoporous alumina templates having pore sizes of 50 and 200 nm. V2O5 formed inside the templates was an amorphous structure with flakelike (50 nm) and round (200 nm) shapes. The capacitance of V2O5 was measured using cyclic voltammetry in 1 M KCl electrolyte, and ca. 900 F g(-1) of maximum specific capacitance was obtained from V2O5 in 50 nm alumina oxide. Improved specific capacitance of V2O5 is ascribed to the high surface area of the porous structure by the use of the template.