Effects of the Application of a Perforated Anode in an Aluminum Electrolysis Cell on the Gas–Liquid Two-Phase Flow and Bubble Distribution Characteristics

Hou, Wenyuan; Li, Hesong; Yuan, Feng; Wang, Jiaoru; Li, Mao; Cheng, Bowen; Cao, Xi

doi:10.1021/acs.iecr.0c02478

Cited by 12 publications

(5 citation statements)

References 29 publications

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“…have been discussed in detail. 43,44 It has been successfully applied to the development of methods for optimizing the operation of current sources, 45 preventing anodizing effects during electrolysis, 46 and forming metal nanoparticles on the surface of the oxide to obtain new materials and other aspects. 47 However, the common factors affecting the diffusion at solid-liquid interface and the formation of surface wetting contact angle, are not sufficiently studied.…”

Section: Metal-based Molten Salt Batterymentioning

confidence: 99%

Influencing Factors and Challenges on the Wettability of Electrode in Molten Salt

Kong,

Su,

et al. 2024

J. Electrochem. Soc.

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Molten salts play an important role in the electrolysis of solid metal compounds, especially oxides and sulfides, and have an impressive storage capacity and power, so they are now the electrolyte for many new types of rechargeable batteries. Unfortunately, due to the high viscosity and high surface tension of molten salt, the unsatisfactory wettability of electrode and molten salt restricts the development of molten salt electrochemistry. In the past half century, research on interface phenomena has been devoted to establishing more accurate models for measuring surface tension and wetting angle, developing more scientific wetting angle measurement techniques, and exploring the influencing factors of wettability. Different from a water solution interface, molten salt experiment are performed in high temperature and pressure environments, making it difficult to test the wetting angle, and there has been little research on the interface phenomenon of molten salt. In this Review, on the basis of existing models and experimental data, the factors and mechanisms that lead to the difference of wettability between melt and solid matrix in molten salt systems are analyzed in detail. Finally, we put forward the prospects and suggestions for the study of the wettability of melt to solid substrate in molten salt.

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Section: Metal-based Molten Salt Batterymentioning

confidence: 99%

Influencing Factors and Challenges on the Wettability of Electrode in Molten Salt

Kong,

Su,

et al. 2024

J. Electrochem. Soc.

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“…Research has shown that bubbles adhering to the electrode surface will affect the actual current density, causing areas HCO − covered by bubbles to exhibit electrochemical inertia 13 , which also affects the distribution of current density on the electrode surface 14 . The movement of bubbles in the water can change the ow eld in the water 15,16 , which in turn affects the growth of bubbles 17,18 . Higher current density promotes bubble growth, but the movement of bubbles can also cause changes in resistance 19 .…”

Section: Introductionmentioning

confidence: 99%

The three-dimensional arrangement of the cathode weakens the bubble aggregation during the electrochemical water softening reaction

Lin,

Xiang,

Wang

et al. 2023

Preprint

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In the application of electrochemical water softening technology, bubbles on the electrode surface during growth and detachment can accumulate into a dense bubble film on the electrode surface, which significantly affects the softening efficiency. This work introduces a spatially arranged cathode to solve the problem of bubble accumulation in electrochemical water softening technology. Experimental results show that the spatial arrangement of the cathode weakens the accumulation of bubbles and is conducive to the softening reaction. Bubble accumulation occurs when bubbles, after detachment, are influenced by factors such as electrode structure and water flow rate during the rising process, which limits the detachment and migration of new bubbles and ions. The spatially arranged cathode shortens the distance that bubbles rise along the electrode surface in the vertical direction, and the result shows that the bubble distribution is more dispersed, and the ion migration capability is enhanced. This study provides a new development idea for electrochemical water softening technology.

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“…[17,18,21] Many research types focus on the original electrolytic cell structure optimization to accelerate the escape of bubbles or stabilize the flow field. [22,23] The influence of structural parameters of the electrolytic cell on the thermal field is studied to reduce energy consumption. [24] The heat balance of electrolytic cells is the basis of the numerical simulation of the physical field.…”

Section: Introductionmentioning

confidence: 99%

Multiple physical field coupling simulation of high current lithium electrolyzer in industry

2022

Can J Chem Eng

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The electric field, thermal field, and velocity field in a 60 kA diaphragmless lithium electrolyzer are studied by multiple physical field coupling simulations. The current density distribution, the balance of heat generation, heat dissipation, and the flow field distribution of the lithium electrolyzer are discussed. The velocity distribution is solved by the Euler-Euler two-phase flow model, and the turbulent flow of electrolyte is solved by the k-ε method. The results show that in an electric-heat field, there is a constant ratio of current loss, and the current density distribution is not uniform. The electrolyte temperature is evenly distributed, wherein thermal radiation plays a dominant role. In addition, it is found that the velocity distribution of the end-side interpolar space and the inside interpolar space is different.

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Effects of the Application of a Perforated Anode in an Aluminum Electrolysis Cell on the Gas–Liquid Two-Phase Flow and Bubble Distribution Characteristics

Cited by 12 publications

References 29 publications

Influencing Factors and Challenges on the Wettability of Electrode in Molten Salt

Influencing Factors and Challenges on the Wettability of Electrode in Molten Salt

The three-dimensional arrangement of the cathode weakens the bubble aggregation during the electrochemical water softening reaction

Multiple physical field coupling simulation of high current lithium electrolyzer in industry

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