Anodic oxidation of Metal ions to insoluble higher oxides with special reference to Manganese dioxide

The phenomena of anodic oxidation of metal ions to insoluble higher oxides cannot be satisfactorily explained on the basis of electrode potential or by postulating intermediate formation of unstable peroxides of electrode material, hydrogen peroxide or persalts. An attempt has been made to correlate the oxidation process with the anodic double layer containing discharged and charged anions and cations. The possibility of extension of the scope of the proposed mechanism has also been indicated.