Electrochemical properties of polyaniline film doped by Ce3+ cation
Tóm tắt
Electrochemical Synthesis (ES)of polyaniline (PAni) is carried out in the presence in electrolyte (1 M H2SO4) of cerium (III) sulfate under potentiostatic and potentiodynamic modes. It is shown that Ce3+ cations in electrolyte catalyze ES, i.e. accelerate both ES variants. The obtained polymers were characterized using the scanning electron microscopy (SEM) technique and also on the basis of the calculation of electrochemical characteristics. Relaxation in PAni polymers doped by the Ce3+ cation occurs several times faster than in proton-doped PAni. The minimum change in ΔE and E is observed in polymers doped by Ce3+ cations during the electrochemical cycling of PAni and PAni-Ce at high rates.
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