Anodic passivation of Pb-Ag-Nd anode in fluoride-containing H2SO4 solution

Zhong, Xiaocong; Jiang, Liangxing; Liu, Fangyang; Li, Jie; Liu, Yexiang

doi:10.1007/s11771-015-2823-0

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…Analysis of the SEM images presented in Fig. 5b clearly indicated that the structure was different from the structure containing volcano-like holes reported by Zhong et al 19 We believe that the change in the surface morphology of β-PbO 2 was related to the high Ag content of the Pb alloy, which improved the quality of the PbO 2 layer.…”

Section: Xrd Patterns Of the Anodic Oxide Layers-xrd Analysis Wasmentioning

confidence: 61%

Influence of F-Doped β-PbO₂Conductive Ceramic Layer on the Anodic Behavior of 3D Al/Sn Rod Pb−0.75%Ag for Zinc Electrowinning

Chen

Yan

et al. 2019

J. Electrochem. Soc.

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In this study, a 3D Al/Sn rod Pb−0.75%Ag anode was prepared by continuous extrusion coating technique, and a conductive ceramic layer was formed by anodic oxidation in a fluoride-containing H 2 SO 4 solution. The phase composition and surface microstructure of the oxide layer were examined by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS), indicating the presence of F-doped β-PbO 2 ceramic layer. The electrocatalytic characteristics and electrochemical stability of the anodes were explored by cyclic voltammetry, anodic polarization curves, electrochemical impedance spectroscopy (EIS) and the accelerated life test in the zinc electrolyte. It was found that the F-doped β-PbO 2 layer has good electrocatalytic activity and corrosion resistance. The fence-like 3D Al/Sn rod Pb−0.75%Ag/F-doped β-PbO 2 anode plate was continuously used in the zinc electrolyte for 15 days; in addition, it was found that compared to the traditional Pb-0.75%Ag anode plate, the ultimate tensile strength improved by about 31.45%, the average cell voltage decreased by 53 mV, and the output of zinc increased by 3.09%, confirming its feasibility in practical applications for zinc EW.

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Section: Xrd Patterns Of the Anodic Oxide Layers-xrd Analysis Wasmentioning

confidence: 61%

Influence of F-Doped β-PbO₂Conductive Ceramic Layer on the Anodic Behavior of 3D Al/Sn Rod Pb−0.75%Ag for Zinc Electrowinning

Chen

Yan

et al. 2019

J. Electrochem. Soc.

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“…6,7 The addition of Nd can adjust the mechanical strength. 8 The addition of Sb can improve corrosion resistance. 9,10 However, the high oxygen evolution overpotential of lead-based anodes increases the cost, and the lead anode dissolves and contaminates the zinc coating.…”

Section: Introductionmentioning

confidence: 99%

A novel CF/Ti/β-PbO₂ composite anode for zinc electrowinning: preparation, electrochemical properties and application

Liu

Zhang

et al. 2023

J. Mater. Chem. A

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Improving the Electrochemical Stability of TiMn₂ Middle‐Layer for Oxygen Evolution Anode in Sulfuric Acid Solution by High‐Temperature Nitriding

Qin,

Li,

Liu

et al. 2024

Advanced Sustainable Systems

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Dimensional Stable Anode (DSA) is a promising candidate for the electrodeposition of nonferrous metals. However, the industrial applications of DSA are limited due to the propensity of Ti substrate to easily undergo passivation. Theoretically analyses shows that TiMn2 has better corrosion resistance in highly acidic and strongly polarized environments, making it an ideal middle‐layer for DSA anodes. To investigate the corrosion resistance of TiMn2, N‐doped TiMn2 (N‐TiMn2) is prepared by the high‐temperature nitriding method. The high charge transfer resistance (Rpo) of N‐TiMn2 reduces the electron transfer ability of its surface and improves the chemical stability. Scanning electron microscopy, X‐ray diffraction, and Raman spectroscopy show that Ti/N‐TiMn2 can better inhibit the oxidation of Ti during electrochemical corrosion while forming a more stable α‐MnO2 film. The Ti/N‐TiMn2/MnO2 anode is prepared, and the theoretical lifetime reaches 541.5 days in zinc electrodeposition simulation experiments. This middle layer provides a new idea for developing the oxygen evolution anode in the electrowinning of nonferrous metals.

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Anodic passivation of Pb-Ag-Nd anode in fluoride-containing H2SO4 solution

Cited by 7 publications

References 13 publications

Influence of F-Doped β-PbO₂Conductive Ceramic Layer on the Anodic Behavior of 3D Al/Sn Rod Pb−0.75%Ag for Zinc Electrowinning

Influence of F-Doped β-PbO₂Conductive Ceramic Layer on the Anodic Behavior of 3D Al/Sn Rod Pb−0.75%Ag for Zinc Electrowinning

A novel CF/Ti/β-PbO₂ composite anode for zinc electrowinning: preparation, electrochemical properties and application

Improving the Electrochemical Stability of TiMn₂ Middle‐Layer for Oxygen Evolution Anode in Sulfuric Acid Solution by High‐Temperature Nitriding

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Anodic passivation of Pb-Ag-Nd anode in fluoride-containing H2SO4 solution

Cited by 7 publications

References 13 publications

Influence of F-Doped β-PbO2Conductive Ceramic Layer on the Anodic Behavior of 3D Al/Sn Rod Pb−0.75%Ag for Zinc Electrowinning

Influence of F-Doped β-PbO2Conductive Ceramic Layer on the Anodic Behavior of 3D Al/Sn Rod Pb−0.75%Ag for Zinc Electrowinning

A novel CF/Ti/β-PbO2 composite anode for zinc electrowinning: preparation, electrochemical properties and application

Improving the Electrochemical Stability of TiMn2 Middle‐Layer for Oxygen Evolution Anode in Sulfuric Acid Solution by High‐Temperature Nitriding

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Influence of F-Doped β-PbO₂Conductive Ceramic Layer on the Anodic Behavior of 3D Al/Sn Rod Pb−0.75%Ag for Zinc Electrowinning

Influence of F-Doped β-PbO₂Conductive Ceramic Layer on the Anodic Behavior of 3D Al/Sn Rod Pb−0.75%Ag for Zinc Electrowinning

A novel CF/Ti/β-PbO₂ composite anode for zinc electrowinning: preparation, electrochemical properties and application

Improving the Electrochemical Stability of TiMn₂ Middle‐Layer for Oxygen Evolution Anode in Sulfuric Acid Solution by High‐Temperature Nitriding