Electrochemical behavior of Pb–Ag–Nd alloy during pulse current polarization in H 2 SO 4 solution

Zhong, Xiaocong; Yu, Xiaoying; Jiang, Liangxing; Li, Fēi; Li, Jie; Liu, Yexiang

doi:10.1016/s1003-6326(15)63774-8

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…29,30 Located in the oxide layer/electrolyte interface, β-PbO 2 could directly participate in the generation of active sites for the oxygen evolution reaction. 31 According to the characteristic peak of α-PbO 2 located at 28.8°, the oxide layer on the Pb-MnCo 27 This result confirms the higher compactness of the oxide layer on the Pb-MnCo 2 O 4.5 composite anode than on the PS-Pb anode, in line with the cross-sectional morphologies shown in Fig. 5.…”

Section: Resultssupporting

confidence: 79%

“…This morphological characteristic is also found on the oxide layer formed on traditional lead alloys manufactured by casting and rolling. 1,26,27 This result indicates that the preparation method of powder metallurgy has little effect on the oxide layer morphology. Figures 4b-4d presents the morphologies of the oxide layers formed on Pb-MnCo 2 O 4.5 composite anodes with different MnCo 2 O 4.5 contents.…”

Section: Resultsmentioning

confidence: 93%

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Incorporating an Efficient Oxygen Evolution Catalyst of MnCo₂O_4.5 into a Pb Matrix as an Energy-Saving Anode for Metal Electrowinning

Zhong,

Ren,

Jiang

et al. 2023

J. Electrochem. Soc.

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Based on the outstanding catalytic activity and stability of Mn-Co bimetallic oxides toward oxygen evolution in acidic solutions, MnCo2O4.5 was incorporated into a Pb matrix through a powder pressing-sintering process to obtain a Pb-MnCo2O4.5 composite anode. Compared with the Pb anode that was made via the powder pressing-sintering process (PS-Pb), the oxide layer formed on the Pb-MnCo2O4.5 anode presented a higher flatness, compactness, and β-PbO2 concentration. Consequently, Pb-5.0MnCo2O4.5 presented a stable anodic potential of 1.235 V, approximately 170 mV lower than that of the PS-Pb anode. In the case of lower MnCo2O4.5 content (≤ 2.5%), the Pb-MnCo2O4.5 composite anode exhibited a smaller Tafel slope (70.39 ~ 79.59 mV dec−1) and a lower charge transfer resistance (0.437 ~ 0.676 Ω cm2). The fresh Pb-5.0MnCo2O4.5 composite anode showed a self-corrosion density of 0.25 mA cm−2, approximately 14.3% of that tested on the PS-Pb anode. However, Co2+ and Mn2+ were detected in the electrolyte during 72 h of electrowinning with the Pb-MnCo2O4.5 composite anode. In summary, the Pb-MnCo2O4.5 composite anode has the potential to reduce the energy consumption of the metal-electrowinning process. Nonetheless, it is necessary to evaluate the influence of dissolved Co2+ and Mn2+ on the cathodic process before commercial application

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Section: Resultssupporting

confidence: 79%

Section: Resultsmentioning

confidence: 93%

Incorporating an Efficient Oxygen Evolution Catalyst of MnCo₂O_4.5 into a Pb Matrix as an Energy-Saving Anode for Metal Electrowinning

Zhong,

Ren,

Jiang

et al. 2023

J. Electrochem. Soc.

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Application of Carbon-Based Oxygen Evolution Reaction Electrocatalyst in Zinc Electrowinning System

Zhao

Huang

Liu

et al. 2021

The Minerals, Metals &Amp; Materials Series

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Size effect of γ-MnO2 precoated anode on lead-containing pollutant reduction and its controllable fabrication in industrial-scale for zinc electrowinning

et al. 2022

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Electrochemical behavior of Pb–Ag–Nd alloy during pulse current polarization in H 2 SO 4 solution

Cited by 4 publications

References 23 publications

Incorporating an Efficient Oxygen Evolution Catalyst of MnCo₂O_4.5 into a Pb Matrix as an Energy-Saving Anode for Metal Electrowinning

Incorporating an Efficient Oxygen Evolution Catalyst of MnCo₂O_4.5 into a Pb Matrix as an Energy-Saving Anode for Metal Electrowinning

Application of Carbon-Based Oxygen Evolution Reaction Electrocatalyst in Zinc Electrowinning System

Size effect of γ-MnO2 precoated anode on lead-containing pollutant reduction and its controllable fabrication in industrial-scale for zinc electrowinning

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Electrochemical behavior of Pb–Ag–Nd alloy during pulse current polarization in H 2 SO 4 solution

Cited by 4 publications

References 23 publications

Incorporating an Efficient Oxygen Evolution Catalyst of MnCo2O4.5 into a Pb Matrix as an Energy-Saving Anode for Metal Electrowinning

Incorporating an Efficient Oxygen Evolution Catalyst of MnCo2O4.5 into a Pb Matrix as an Energy-Saving Anode for Metal Electrowinning

Application of Carbon-Based Oxygen Evolution Reaction Electrocatalyst in Zinc Electrowinning System

Size effect of γ-MnO2 precoated anode on lead-containing pollutant reduction and its controllable fabrication in industrial-scale for zinc electrowinning

Contact Info

Product

Resources

About

Incorporating an Efficient Oxygen Evolution Catalyst of MnCo₂O_4.5 into a Pb Matrix as an Energy-Saving Anode for Metal Electrowinning

Incorporating an Efficient Oxygen Evolution Catalyst of MnCo₂O_4.5 into a Pb Matrix as an Energy-Saving Anode for Metal Electrowinning