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Glassy carbon electrodes coated with thin oxymetallic films of Co(II), Fe(II), Ni(II), Pb(II), Ce(III), Cr(III), Tl(I) and Mn(II) were investigated for the presence of electrocatalytic effect towards H 2 O 2 oxidation. Of these, Co(II), Ni(II), Pb(II), Ce(III) and Mn(II) were found to exhibit such an effect in alkaline medium, with Co(II) showing the strongest effect. Further studies...