Application of Pluronic P123 in Suspension Form as a Corrosion Inhibitor for Zinc in Alkaline Battery Electrolyte

Pluronic P123, a type of Poloxamers materials, was examined as an inhibitor for decreasing zinc corrosion in alkaline media (4.0 M NaOH). This material was used in the form of the particles dispersed in electrolyte (suspension form). Its effect was examined by electrochemical methods potentiodynamic polarization (Tafel) and electrochemical impedance spectroscopy (EIS). Scanning electron microscopy (SEM) was used to analysis the electrode surface in presence and abcense of the inhibitor. The obtained results indicate that P-123 inhibits zinc corrosion in 4.0 M NaOH electrolyte and zinc corrosion decreases with increasing the value of P-123 particles. Moreover, the results of potentiodynamic polarization reveal that the inhibitor affects both the anodic and cathodic branch, so it is mix type. The obtained inhibition efficiency from potentiodynamic polarization and EIS showed a reasonable agreement. In addition, for battery application, it was found that P-123 increases Zn/CuO battery performance