Influence Mechanism of Sulfide Ions during Manganese Electrodeposition
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2019年第6期
论文作者：薛建荣 ZHONG Hong WANG Shuai LONG Dongping
文章页码：1451 - 1459
摘 要：Influence mechanism of sulfide ions(S2-) during manganese electrodeposition from sulphate electrolyte was investigated. Under the experimental conditions, S2- 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 S2- ion concentration was increased. X-ray Diffraction（XRD） displayed that S2- ion had negligible influence on the preferred orientation of the crystalline layer of the EML. S2- ion had no influence on the chemical composition of EML. S2- ion could improve the corrosion resistance of EML. The interaction mechanism of S2- ion with manganese electrodeposition was systematically explored by analysing E-pH diagram, cyclic voltammetry curve, cathode polarization curve and electrochemical impedance method.
薛建荣1,2，ZHONG Hong2，WANG Shuai2，LONG Dongping3
1. College of Chemistry and Chemical Engineering, Hunan University of Science and Technology2. College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University3. Intelligent Manufacturing Institute of HNUST, Hunan University of Science and Technology
摘 要：Influence mechanism of sulfide ions(S2-) during manganese electrodeposition from sulphate electrolyte was investigated. Under the experimental conditions, S2- 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 S2- ion concentration was increased. X-ray Diffraction（XRD） displayed that S2- ion had negligible influence on the preferred orientation of the crystalline layer of the EML. S2- ion had no influence on the chemical composition of EML. S2- ion could improve the corrosion resistance of EML. The interaction mechanism of S2- ion with manganese electrodeposition was systematically explored by analysing E-pH diagram, cyclic voltammetry curve, cathode polarization curve and electrochemical impedance method.
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