Aluminum is one of cladding materials for nuclear fuel,it is important to investigate the electrolytic dissolution of aluminum in nitric acid.The electrochemical impedance spectroscopy,polarization curve and cyclic voltammetry cure of anodic aluminum electrode in nitric acid under various conditions were collected(Fig.1).It turns out,under steady state,the thickness of the passivated film of aluminum Aluminum is one of cladding materials for nuclear fuel, it is important to investigate the electrolytic dissolution of aluminum in nitric acid. Electrochemical reaction spectroscopy, polarization curve and cyclic voltammetry cure of anodic aluminum electrode in nitric acid under various conditions were collected (Fig. 1) .It turns out, under steady state, the thickness of the passivated film of aluminum