Suppression of corrosion study on polypyrrole/zinc oxide nanoparticle composites for rechargeable battery electrode materials

摘要

polypyrrole/zinc oxide nanoparticle(PPy/ZnO)composites are successfully synthesized via in-situ polymerization by aiding of ultrasonic irradiation.The different ratio of PPy to ammonium persulfate(APS)at 1:0.5,1:1 and 1:1.5 is used to control the amounts of PPy in composites.Scanning Electron Microscopy indicates the development of nano/microstructure of PPy with increasing the amount of APS.The surface electrochemical activity of ZnO/PPy anodic electrode is characterized by linear polarization and cyclic voltammetry(CV).The introduce of PPy onto ZnO surface with the appropriate content and structure can improve the anti-corrosion and charge performance of electrode composites.The synthesized ZnO/PPy electrode at PPy/APS ratio of 1:1 can yield the highest values of corrosion inhibition efficiency of 73.50 % in 7 M KOH aqueous solution.