Remarkably high value of Capacitance in BiFeO3 Nanorod

A remarkably high value of specific capacitance of 450 F/g has been observed through electrochemical measurements in the electrode made of multiferroic Bismuth Ferrite (BFO) in the form of nanorods protruding out. These BFO nanorods were developed on porous Anodised Alumina (AAO) templates using wet chemical technique. Diameters of nanorods were in the range of 20-100 nm. The high capacitance is attributed to the nanostructure. The active surface charge has been evaluated electrochemically by cyclic voltammetry (CV) at different scanning rates and charge-discharge studies. The specific capacitances were constant after several cycles of charge-discharge leading to their useful application in devices. The mechanism of accumulation of charge on the electrode surface has been studied.