Influence of Cs and Rb additions in LiK and LiNa molten carbonates on the behaviour of MCFC commercial porous Ni cathode

Albin, V.; Crapart, C.; Lair, Virginie; Ringuedé, Armelle; Cassir, M.

doi:10.1016/j.ijhydene.2016.09.118

Cited by 11 publications

(3 citation statements)

References 24 publications

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“…Most current research on facilitating porous component filling has focused on improving the physicochemical parameters of battery electrolytes and surface chemistry. 39,41,42 Over the years, some of the fundamental issues associated with interface phenomena (phase transitions, wetting, membrane stability, adsorption, catalysis, etc.) have been discussed in detail.…”

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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“…Studies have demonstrated that the anodes can be mechanically reinforced by adding a third alloying element to the NiAl or incorporating a hard metal oxide as a coating to block the dislocation movement and the sintering that can occur during the cell’s operation [ 14 , 19 ]. These ternary systems have interesting electrochemical properties, good ductility and stiffness, low creep resistance, and good corrosion resistance [ 14 , 20 ]. Nguyen et al [ 15 ] incorporated chromium into the Ni-Al anode, finding the best creep strain with Ni-5 wt.% Al-10 wt.% Cr.…”

Section: Introductionmentioning

confidence: 99%

Ni-Al Bronze in Molten Carbonate Manufactured by LPBF: Effect of Porosity Design on Mechanical Properties and Oxidation

et al. 2023

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Fuel cell technology has developed due to diminishing dependence on fossil fuels and carbon footprint production. This work focuses on a nickel–aluminum bronze alloy as an anode produced by additive manufacturing as bulk and porous samples, studying the effect of designed porosity and thermal treatment on mechanical and chemical stability in molten carbonate (Li2CO3-K2CO3). Micrographs showed a typical morphology of the martensite phase for all samples in as-built conditions and a spheroid structure on the surface after the heat treatment, possibly revealing the formation of molten salt deposits and corrosion products. FE-SEM analysis of the bulk samples showed some pores with a diameter near 2–5 μm in the as-built condition, which varied between 100 and −1000 μm for the porous samples. After exposure, the cross-section images of porous samples revealed a film composed principally of Cu and Fe, Al, followed by a Ni-rich zone, whose thickness was approximately 1.5 µm, which depended on the porous design but was not influenced significantly by the heat treatment. Additionally, by incorporating porosity, the corrosion rate of NAB samples increased slightly.

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“…4,5 and ion conductivity. [6][7][8] Meléndez-Ceballos et al 9,10 claimed that the charge transfer resistance for the reduction of oxygen species (peroxide, superoxide, peroxycarbonate, etc.) decreased with the addition of Cs + and Rb + .…”

mentioning

confidence: 99%

Electrochemical Study on MgO as an Additive in Molten Li₂CO₃-Na₂CO₃ for Molten Carbonate Fuel Cells

Kim¹,

Kim²,

Yoon³

et al. 2021

J. Electrochem. Soc.

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This study investigates the effect of MgO as an additive in molten Li2CO3-Na2CO3 electrolyte for molten carbonate fuel cells through electrochemical analyses. Addition of MgO (1∼5 mol%) increased the electrochemical response in cyclic voltammogram of peroxide in molten Li2CO3-Na2CO3. The diffusion coefficient of peroxide in molten Li2CO3-Na2CO3 containing MgO was determined via the comparison between the peak currents of cyclic voltammograms from microwire electrode and macrowire electrode. The addition of MgO did not impact the diffusion coefficient, indicating that the increase in the electrochemical response with the addition of MgO might be attributed to the increase in the peroxide concentration. The change in peroxide concentration was also confirmed by electrochemical impedance analyses, which exhibited a decrease in the charge transfer resistance. The increase in the concentration of peroxide with the addition of MgO might be associated with the high thermal decomposition constant of MgCO3, implying the high concentration of oxide ion in the molten Li2CO3-Na2CO3. This study suggests that MgO might be an effective additive for increasing the oxygen solubility in the molten Li2CO3-Na2CO3, and subsequently for enhancing the performance of molten carbonate fuel cells.

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Influence of Cs and Rb additions in LiK and LiNa molten carbonates on the behaviour of MCFC commercial porous Ni cathode

Cited by 11 publications

References 24 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

Ni-Al Bronze in Molten Carbonate Manufactured by LPBF: Effect of Porosity Design on Mechanical Properties and Oxidation

Electrochemical Study on MgO as an Additive in Molten Li₂CO₃-Na₂CO₃ for Molten Carbonate Fuel Cells

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Influence of Cs and Rb additions in LiK and LiNa molten carbonates on the behaviour of MCFC commercial porous Ni cathode

Cited by 11 publications

References 24 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

Ni-Al Bronze in Molten Carbonate Manufactured by LPBF: Effect of Porosity Design on Mechanical Properties and Oxidation

Electrochemical Study on MgO as an Additive in Molten Li2CO3-Na2CO3 for Molten Carbonate Fuel Cells

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Product

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Electrochemical Study on MgO as an Additive in Molten Li₂CO₃-Na₂CO₃ for Molten Carbonate Fuel Cells