Influence mechanism of sulfide ions(S^2-) during manganese electrodeposition from sulphate electrolyte was investigated. Under the experimental conditions, S^2- ion concentration and electrolyte pH represented signifi...Influence mechanism of sulfide ions(S^2-) during manganese electrodeposition from sulphate electrolyte was investigated. Under the experimental conditions, S^2- ion concentration and electrolyte pH represented significant multiple effects on the cathode current efficiency. Scanning electron microscope(SEM) indicated that electrodeposition manganese layer(EML) became refinement as S^2- ion concentration was increased. X-ray Diffraction(XRD) displayed that S^2- ion had negligible influence on the preferred orientation of the crystalline layer of the EML. S^2- ion had no influence on the chemical composition of EML. S^2- ion could improve the corrosion resistance of EML. The interaction mechanism of S^2- ion with manganese electrodeposition was systematically explored by analysing E-pH diagram, cyclic voltammetry curve, cathode polarization curve and electrochemical impedance method.展开更多
基金Funded partly by the National Natural Science Foundation of China(No.21376273)the National Science and Technology Support Program of China(No.2015BAB17B01)the Open Research Fund of Hunan Provincial Science and the Technology Plan Project(No.MN2017K05),China
文摘Influence mechanism of sulfide ions(S^2-) during manganese electrodeposition from sulphate electrolyte was investigated. Under the experimental conditions, S^2- ion concentration and electrolyte pH represented significant multiple effects on the cathode current efficiency. Scanning electron microscope(SEM) indicated that electrodeposition manganese layer(EML) became refinement as S^2- ion concentration was increased. X-ray Diffraction(XRD) displayed that S^2- ion had negligible influence on the preferred orientation of the crystalline layer of the EML. S^2- ion had no influence on the chemical composition of EML. S^2- ion could improve the corrosion resistance of EML. The interaction mechanism of S^2- ion with manganese electrodeposition was systematically explored by analysing E-pH diagram, cyclic voltammetry curve, cathode polarization curve and electrochemical impedance method.
