Oxygen evolution and corrosion behavior of Pb-CeO2 anodes in sulfuric acid solution

Wang, Wenjun; Wang, Zhuoran; Yuan, Tiechui; Li, Ruidi; Li, Haihua; Lin, Wen‐Shan; Zheng, Dan

doi:10.1016/j.hydromet.2018.12.014

Cited by 26 publications

(8 citation statements)

References 27 publications

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“…In terms of the performance of an anode, corrosion behavior is a critical indicator that directly affects its cost and lifetime. 53 In order to further study the influence of MnO 2 deposited by different polarization forms on anode corrosion behaviors, Tafel tests were performed. Figure 9a presents the Tafel curves of MnO 2 on lead alloy anode with a constant scan rate at 10 mV s −1 in 1 M H 2 SO 4 solution after 50 min of galvanostatic polarization by DC, PC-100 Hz, PC-500 Hz, and PC-1000 Hz, respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Electrochemical Behaviors of MnO₂ on Lead Alloy Anode during Pulse Electrodeposition for Efficient Manganese Electrowinning

Xie

Liu

Chang

et al. 2020

ACS Sustainable Chem. Eng.

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The electrochemical performances of deposited MnO2 on lead alloy anode by pulse current (PC) and direct current (DC) electrodeposition in manganese sulfate solution were investigated by performing measurements of galvanostatic polarization, cyclic voltammetry (CV), and Tafel tests. The composition and morphology of MnO2 were observed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The anode deposited with MnO2 layers by PC electrodeposition presented a lower anodic potential of 60 mV and more uniform potential oscillating attractor with fractal dimension of 1.0337 compared with those of DC electrodeposition. In addition, MnO2 layers exhibited excellent corrosion resistance because less intermediate oxide Mn(III) appeared in anode deposits. Furthermore, the cathodic current efficiency improved by 3.11∼3.77% and energy consumption decreased by 5.30∼8.17% after galvanostatic electrolysis for 2∼8 h by using PC instead of DC for manganese metal electrodeposition. As an external control method, PC electrodeposition not only regulated the structure and surface morphology of MnO2 but also affected the anode electrochemical behaviors and cathode manganese metal deposition. Electrochemical oscillations and other characteristics of anode reaction described in this study could inspire future work on promoting the whole electrowinning process.

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Section: ■ Results and Discussionmentioning

confidence: 99%

“…In terms of the performance of an anode, corrosion behavior is a critical indicator that directly affects its cost and lifetime . In order to further study the influence of MnO 2 deposited by different polarization forms on anode corrosion behaviors, Tafel tests were performed.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Behaviors of MnO₂ on Lead Alloy Anode during Pulse Electrodeposition for Efficient Manganese Electrowinning

Xie

Liu

Chang

et al. 2020

ACS Sustainable Chem. Eng.

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“…The amount of cerium dioxide controlled the oxide layer thickness by stimulating the initiation of oxide layer in lead-cerium dioxide coating and thereby reduced the corrosion when subjected to electromagnetic corrosion in acid medium. [45]. However, in best of authors' knowledge, hybrid aluminum matrix composite with molybdenum disulfide and cerium dioxide reinforcement was not fabricated by friction stir processing which may result in good wear and corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of molybdenum disulfide resulted in reduction of wear debris and micro-cracks in the worn surface of aluminum 2219-molybdenum disulfide composite [40]. Cerium dioxide is a wellknown substance for improving corrosion resistance of alloys [43][44][45][46][47][48]. The amount of cerium dioxide controlled the oxide layer thickness by stimulating the initiation of oxide layer in lead-cerium dioxide coating and thereby reduced the corrosion when subjected to electromagnetic corrosion in acid medium.…”

Section: Introductionmentioning

confidence: 99%

Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing

Maji

Ghosh

Nath

et al. 2022

Materialwissenschaft Werkst

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Aluminum matrix composites are widely used for making structural components in the aerospace and automobile industries. In order to sustain the operational demand, excellent anti-wear and corrosion resistance properties are required in the composites. To achieve this, molybdenum disulfide and cerium dioxide reinforced hybrid aluminum-based composites are fabricated by friction stir processing at different rotational speed and number of passes. Due to grain refinement and better particle distribution at high rotational speed and 2 pass, tensile strength and microhardness improves by sacrificing ductility. However, deterioration of mechanical properties than the as-received alloy is evident in all the composites due to dissolvement of strengthening precipitates. With increasing tool rotational speed, severe adhesion type of wear shifts to abrasion wear and the wear resistance also improves. All the composites show similar corrosion behavior as the unprocessed alloy. However, the corrosion parameters such as corrosion potential and corrosion current density were influenced by processing conditions. The composite produced with 1500 min À 1 and 2 pass exhibits highest wear and corrosion resistance.

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“…34 Additionally, some researchers have started with the structural design of electrode materials, which has improved the electrochemical properties of electrode materials by using composite structures. Wang, W. J., 35 Zhang, Y. C. 25 and Mohammadi, M. 18 et al reported that electrocatalytically active substances were compounded on the surface of Pb and Pb-Ag substrates to improve their electrocatalytic activity by chemical deposition and coating. 36,37 Zhou, X. Y., 38 Zhang, Y. C. 39 and Yang, H. T. 40 et al developed Al/Pb laminated composites, which have the characteristics of good electrochemical performance, light weight, high strength, energy savings and consumption reduction.…”

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confidence: 99%

Effect of the Sn Addition on the Electrochemical Properties of Al/Pb Anodes and Its Application in Zinc Electrowinning

Zhi-jun

Zhu

et al. 2021

ECS J. Solid State Sci. Technol.

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Al/Sn/Pb composite anode materials were prepared by the hot-pressing diffusion method to improve their electrochemical properties. The bonding interface, electrochemical properties, and application properties in the zinc electrowinning process of the composite electrode materials were tested and analyzed. The results indicate that an improvement of the corrosion resistance of the electrode material, a more uniform distribution of the surface potential, and an enhancement of the electrochemistry have been achieved by changing the structure of the electrode. The cell voltage of the Al/Sn/Pb composite anode decreased by 0.169 V compared with that of the Pb alloy electrode in the zinc electrowinning engineering experiment. Its current efficiency is increased by 8.5%, its specific electric energy consumption is reduced by 11.4%, and its corrosion rate is reduced by 57.3%. The surface quality of the cathode-precipitated products is good, the impurity content is low, and the impurity Pb content is decreased by 35.59% compared to the Pb alloy electrode.

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Oxygen evolution and corrosion behavior of Pb-CeO2 anodes in sulfuric acid solution

Cited by 26 publications

References 27 publications

Electrochemical Behaviors of MnO₂ on Lead Alloy Anode during Pulse Electrodeposition for Efficient Manganese Electrowinning

Electrochemical Behaviors of MnO₂ on Lead Alloy Anode during Pulse Electrodeposition for Efficient Manganese Electrowinning

Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing

Effect of the Sn Addition on the Electrochemical Properties of Al/Pb Anodes and Its Application in Zinc Electrowinning

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Oxygen evolution and corrosion behavior of Pb-CeO2 anodes in sulfuric acid solution

Cited by 26 publications

References 27 publications

Electrochemical Behaviors of MnO2 on Lead Alloy Anode during Pulse Electrodeposition for Efficient Manganese Electrowinning

Electrochemical Behaviors of MnO2 on Lead Alloy Anode during Pulse Electrodeposition for Efficient Manganese Electrowinning

Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing

Effect of the Sn Addition on the Electrochemical Properties of Al/Pb Anodes and Its Application in Zinc Electrowinning

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Electrochemical Behaviors of MnO₂ on Lead Alloy Anode during Pulse Electrodeposition for Efficient Manganese Electrowinning

Electrochemical Behaviors of MnO₂ on Lead Alloy Anode during Pulse Electrodeposition for Efficient Manganese Electrowinning