Influence of the composite organic additive on electrochemical properties of zinc electrode in alkaline solution

A new type of composite organic additive ST,which consisted of an anionic surfactant of S and a nonionic surfactant of T was prepared.The influence of composite organic additive ST on zinc electrode in alkaline solution was researched by methods of hydrogen evolution experiment,electrochemical experiment and SEM in this paper.The results showed that S and T have an obvious synergistic effect.The addition of T caused the remarkable reduce of saturated concentration of S absorption on zinc electrode and the distribution of absorption became more homogeneous.ST inhibited corrosion of zinc electrode and improved the discharge capacity.Through electrochemical morphological observation of anodic passivation behaviors of zinc electrode,the absorption of ST on electrode surface made discharged production much smaller and kept crude porous structure intact.Passivation of zinc electrode had been postponed.