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

Zhang, Feilong; Zuo, Jiane; Jin, Wei; Xu, Fang; Jiang, Linhua; Xi, Duoxiang; Wen, Yucheng; Li, Jianhui; Yu, Zhaosheng; Li, Zhiqiang; Xu, Ruichao; Zhang, Ge; Zhou, Chao; Duan, Ning

doi:10.1016/j.chemosphere.2021.132457

Cited by 18 publications

(6 citation statements)

References 45 publications

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“…New procedures have been researched in recent years, including the atomic calcination method, direct membrane electrolysis, and electrokinetic separation, and they have shown significant cost reductions over traditional recycling processes while significantly minimizing auxiliary contamination [108]. The thermal decomposition approach allows for more significant self-sustaining lead recovery, while the electrowinning method reduces the number of stages in the recycling method [109].…”

Section: Circular Eecs Economy-reuse Recycle and Refurbishmentioning

confidence: 99%

Towards Sustainable Fuel Cells and Batteries with an AI Perspective

et al. 2022

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With growing environmental and ecological concerns, innovative energy storage systems are urgently required to develop smart grids and electric vehicles (EVs). Since their invention in the 1970s, rechargeable lithium-ion batteries (LIBs) have risen as a revolutionary innovation due to their superior benefits of high operating potential and energy density. Similarly, fuel cells, especially Proton Exchange Membrane Fuel Cells (PEMFC) and Solid-Oxide Fuel Cells (SOFC), have been developed as an energy storage system for EVs due to their compactness and high-temperature stability, respectively. Various attempts have been made to explore novel materials to enhance existing energy storage technologies. Materials design and development are significantly based on trial-and-error techniques and require substantial human effort and time. Additionally, researchers work on individual materials for specific applications. As a viewpoint, we present the available sustainable routes for electrochemical energy storage, highlighting the use of (i) green materials and processes, (ii) renewables, (iii) the circular economy approach, (iv) regulatory policies, and (v) the data driven approach to find the best materials from several databases with minimal human involvement and time. Finally, we provide an example of a high throughput and machine learning assisted approach for optimizing the properties of several sustainable carbon materials and applying them to energy storage devices. This study can prompt researchers to think, advance, and develop opportunities for future sustainable materials selection, optimization, and application in various electrochemical energy devices utilizing ML.

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Section: Circular Eecs Economy-reuse Recycle and Refurbishmentioning

confidence: 99%

Towards Sustainable Fuel Cells and Batteries with an AI Perspective

et al. 2022

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“…Well-defined, the LBA has long been known for its irreplaceable and impressively inert electrodes in the long and medium-term development of metal electrowinning. 19 Although numerous attempts have focused on combining a multifunctional MnO 2 film with LBA through powder-press, 20 hydrothermal, and electrodeposition methods, 21 many species were transient in nature until the development of "dead MnO 2 " in the Mn 2+ -rich system. 8 According to the in situ detection of the oxide film by combining μ-XRF with mm-XRF, the Pb-related species resulting from anode degradation are parasitized with the MnO 2 matrix, and the lead contents show an inhomogeneous field gradient along the vertical outward direction.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric structural tuning of industrial MnO₂ arrays on a hierarchical lead-based anode for manganese metallurgy

Tang,

Yang,

Chen

et al. 2024

Green Chem.

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“…Chen et al studied the effect of Mn 2+ (≤160 mg/L) on the anodic film properties and corrosion behavior of Pb–0.07%Ca–1.25%Sn anodes in an acidic CuSO 4 electrolyte . Some researchers also investigated the electrochemical behavior of lead-based composite anodes in solutions containing manganese ions. , …”

Section: Introductionmentioning

confidence: 99%

“…17 Some researchers also investigated the electrochemical behavior of lead-based composite anodes in solutions containing manganese ions. 18,19 The above studies are based on the sulfuric acid system. However, the electrowinning of manganese is carried out in neutral ammonium sulfate and manganese sulfate, which are different from the above systems in solute, temperature, and current density.…”

Section: ■ Introductionmentioning

confidence: 99%

Revealing the Reaction Mechanism of Lead Anodes in the Manganese Electrowinning Process

Luo

Guo

et al. 2023

ACS Sustainable Chem. Eng.

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The electrowinning process of metal manganese suffers from the generation of anode slime. The solution has been hampered by a lack of clarity in the reaction mechanism. In this work, the anodic process was investigated from three aspects. First, four time points were selected to study the self-oxidation of the lead anode; second, the electrochemical behavior of manganese ions was observed by in situ UV–Vis spectroscopy; and finally, the chemical states of oxidative products and their effects on oxygen evolution were analyzed via X-ray photoelectron spectroscopy (XPS) and Tafel curves. Results show that an oxide film is formed on the inner side by self-oxidation of the lead anode and the manganese dioxide in the system is produced by the hydrolysis of trivalent manganese ions. A lead matrix/lead sulfate/lead–manganese mixed layer/nano-manganese dioxide layer is gradually formed on the surface. As the electrolysis progresses, the oxygen evolution activity of the electrode gradually increases, but the anode film tends to fall off under the wash of oxygen. The final anode slime is formed by the mixture of hydrolysates in the solution and the falling anode film. This work is expected to lay a theoretical framework for the anodic research of electrolytic manganese.

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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

Cited by 18 publications

References 45 publications

Towards Sustainable Fuel Cells and Batteries with an AI Perspective

Towards Sustainable Fuel Cells and Batteries with an AI Perspective

Asymmetric structural tuning of industrial MnO₂ arrays on a hierarchical lead-based anode for manganese metallurgy

Revealing the Reaction Mechanism of Lead Anodes in the Manganese Electrowinning Process

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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

Cited by 18 publications

References 45 publications

Towards Sustainable Fuel Cells and Batteries with an AI Perspective

Towards Sustainable Fuel Cells and Batteries with an AI Perspective

Asymmetric structural tuning of industrial MnO2 arrays on a hierarchical lead-based anode for manganese metallurgy

Revealing the Reaction Mechanism of Lead Anodes in the Manganese Electrowinning Process

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Asymmetric structural tuning of industrial MnO₂ arrays on a hierarchical lead-based anode for manganese metallurgy