Numerical Simulations of Wettability on Anodic Bubble Expansion in Aluminum Electrolysis Cell Using Lattice Boltzmann Method

Ma, Shuangjun; Wang, Long; Liu, Xiaozhen; Nan, Zou; Diop, Mouhamadou A.

doi:10.1007/s11837-023-05696-8

Cited by 3 publications

(3 citation statements)

References 51 publications

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“…The CO electrolysis performance in terms of C 2+ FE and partial current density is well-placed among previous reports (Fig. 1c, Supplementary Table 2) 8,9,15,[18][19][20][21][22][23][24] . As no C 1 by-products are generated, the C 2+ carbon selectivity is ~100%, even at a high CO conversion of 85 ± 3% and a high converted CO rate of 65.1 ± 2.3 mL min −1 , is favorable compared to reported thermocatalytic CO hydrogenation processes (Fig.…”

Section: Co Electrolysis Performancesupporting

confidence: 85%

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CO electrolysis to multicarbon products over grain boundary-rich Cu nanoparticles in membrane electrode assembly electrolyzers

Li,

Wei,

Liu

et al. 2024

Nat Commun

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Producing valuable chemicals like ethylene via catalytic carbon monoxide conversion is an important nonpetroleum route. Here we demonstrate an electrochemical route for highly efficient synthesis of multicarbon (C2+) chemicals from CO. We achieve a C2+ partial current density as high as 4.35 ± 0.07 A cm−2 at a low cell voltage of 2.78 ± 0.01 V over a grain boundary-rich Cu nanoparticle catalyst in an alkaline membrane electrode assembly (MEA) electrolyzer, with a C2+ Faradaic efficiency of 87 ± 1% and a CO conversion of 85 ± 3%. Operando Raman spectroscopy and density functional theory calculations reveal that the grain boundaries of Cu nanoparticles facilitate CO adsorption and C − C coupling, thus rationalizing a qualitative trend between C2+ production and grain boundary density. A scale-up demonstration using an electrolyzer stack with five 100 cm2 MEAs achieves high C2+ and ethylene formation rates of 118.9 mmol min−1 and 1.2 L min−1, respectively, at a total current of 400 A (4 A cm−2) with a C2+ Faradaic efficiency of 64%.

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Section: Co Electrolysis Performancesupporting

confidence: 85%

“…The error bars represent standard error of the mean and are made based on three fully separate and identical measurements. c CO electrolysis performance comparison8,9,15,[18][19][20][21][22][23][24] . d, e Performance comparison between CO electrolysis in this work and thermocatalytic CO hydrogenation[3][4][5][25][26][27][28][29][30] .…”

mentioning

confidence: 99%

CO electrolysis to multicarbon products over grain boundary-rich Cu nanoparticles in membrane electrode assembly electrolyzers

Li,

Wei,

Liu

et al. 2024

Nat Commun

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“…At present, most work has investigated the wetting of carbonaceous materials by aluminum-cryolite and halide melts, as the behavior of these interfaces determines the aluminum electrolysis process. 6,7 With the development of the titanium and magnesium industry and electric battery technology, researchers began to be interested in the study of ion melt wetting other materials. Most of the data on the angles of wetting of solid surfaces by melts has been obtained under conditions of an uncontrolled potential, which probably reduces the value of these data.…”

mentioning

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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Effect of Orifice Position on Bubble Aggregation and Coalescence in Dynamic Rotating Flow

Wang,

Liu,

Wang

et al. 2024

JOM

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Numerical Simulations of Wettability on Anodic Bubble Expansion in Aluminum Electrolysis Cell Using Lattice Boltzmann Method

Cited by 3 publications

References 51 publications

CO electrolysis to multicarbon products over grain boundary-rich Cu nanoparticles in membrane electrode assembly electrolyzers

CO electrolysis to multicarbon products over grain boundary-rich Cu nanoparticles in membrane electrode assembly electrolyzers

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

Effect of Orifice Position on Bubble Aggregation and Coalescence in Dynamic Rotating Flow

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