Thermodynamics and kinetics of hydriding and dehydriding reactions in Mg-based hydrogen storage materials

Li, Qian; Lu, Yangfan; Luo, Qun; Yang, Xiaohua; Yang, Yan; Tan, Jun; Dong, Zhihua; Dang, Jie; Li, Jianbo; Chen, Yuan; Jiang, Bin; Sun, Shuhui; Pana, Fusheng

doi:10.1016/j.jma.2021.10.002

Cited by 333 publications

(44 citation statements)

References 168 publications

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“…Taking ZnSO 4 electrolyte as an example, the reactions occurring on the zinc electrode and the corresponding electrode potentials are presented in Eqs. ( 10)-( 13): [71] Deposition: (10) HER: (11) Corrosion: (12) Side reaction: (13) where E is the potential, γ denotes the activity, C stands for the concentration and the other physical parameters represent specific values. Because of HER and zinc corrosion, the constant consumption of H + synchronizes with the side reactions caused by the remaining OH À , leading to no significant change in the pH value of the electrolyte.…”

Section: Corrosion Behavior Of Zinc In Mild Acidic Electrolytementioning

confidence: 99%

“…In recent years, the market has been successfully occupied by various advanced energy storage systems as the demand for energy resources has increased. [1][2][3][4][5][6][7][8][9][10][11] Rechargeable aqueous zinc-based batteries (RAZMBs) have proven to be one of the most promising candidates in a variety of application scenarios. [12][13][14][15][16][17] Compared with lithium-ion batteries using conventional organic electrolytes, RAZMBs have been received widespread attention due to their advantages in terms of safety and economic efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, the market has been successfully occupied by various advanced energy storage systems as the demand for energy resources has increased [1–11] . Rechargeable aqueous zinc‐based batteries (RAZMBs) have proven to be one of the most promising candidates in a variety of application scenarios [12–17] .…”

Section: Introductionmentioning

confidence: 99%

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Towards Understanding the Corrosion Behavior of Zinc‐Metal Anode in Aqueous Systems: From Fundamentals to Strategies

Han

Luo

et al. 2022

Batteries & Supercaps

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Owing to the properties of cost-efficient, high-energy density and environmental friendliness, rechargeable aqueous zincmetal batteries (RAZMBs) are promising candidates for the next generation metal-based batteries in large-scale energy storage systems. However, the practical applications of RAZMBs are severely limited due to the presence of inevitable side reactions referring to zinc corrosion and hydrogen evolution reaction (HER) occurring at the electrode-electrolyte interface. The uninterrupted interfacial side reactions at the expense of continuous capacity fading and reduced reversibility of zinc are required to give more attention to mitigate them. Given the above concerns, in this review, the fundamental principles of corrosion thermodynamics and kinetics of zinc electrodes in aqueous media are elucidated. Furthermore, the recent optimization strategies targeting enhanced stability of zinc electrodes are reviewed including electrolyte additives, zinc alloying, electrodeposited Zn and coating treatments. Finally, considering the current main research orientations, some perspectives are provided to facilitate the development of future applications of zinc anodes.

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Section: Corrosion Behavior Of Zinc In Mild Acidic Electrolytementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Towards Understanding the Corrosion Behavior of Zinc‐Metal Anode in Aqueous Systems: From Fundamentals to Strategies

Han

Luo

et al. 2022

Batteries & Supercaps

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“…The model-fitting method was widely used to obtain the kinetic triplet (the activation energy, the pre-exponential factor, and the reacted fraction) and evaluate the kinetic mechanism of the gas–solid reaction . A variety of kinetic models have been widely used to describe the kinetic mechanisms of gas–solid reactions. − The kinetic analysis of the oxidation resistance of the alloy can be performed according to the Wagner theory and the Arrhenius equation, and the parabolic law can be described using the following equation: where Δ m is the oxidation weight gain per unit area after oxidation, A is the surface area of the sample, and k is the parabolic reaction rate constant. The slope of the linear fit in Figure gives the reaction rate constant k for the oxidation of the alloy.…”

Section: Resultsmentioning

confidence: 99%

Oxidation Behavior of the Si-B-X (X = Mo, Cr, or Ti) Alloys in the Temperature Range of 1000–1400 °C

Zeng

Xiong

et al. 2022

ACS Omega

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Low-melting-point silicon–boron system alloys are promising for low-temperature reactive melt infiltration to reduce high-temperature damage to silicon carbide fibers during the densification of SiC/SiC composites. Meanwhile, the oxidation resistance of the alloys will have a large impact on the intrinsic oxidation resistance of the composite. Herein, three alloys, Si-14.88B-7Mo, Si-14.88B-7Ti, and Si-14.88B-7Cr, were fabricated to investigate the oxidation behavior in air at 1000–1400 °C. The results showed that the oxidation weight gains of the Si-B-Mo alloy after oxidation at 1400 °C for 100 h were 0.9 mg/cm –2 , which were only 50 and 1.5% of those of Si-B-Ti and Si-B-Cr alloys, respectively. The excellent oxidation resistance of Si-B-Mo alloys at 1000–1400 °C was attributed to the formation of glassy-surface layers and the dense internal oxide layer. The dense oxide layer and the low solubility of Mo ions in SiO 2 inhibit the volatilization of MoO 3 and the oxidation reaction, reducing the oxidation rate of the Si-B-Mo alloy. The difference in the coefficients of thermal expansion for SiO 2 and TiO 2 led to penetrating cracks in the oxide layer of the Si-B-Ti alloy during cooling, thereby reducing the oxidation resistance. In addition, the rate of volatilization of Cr 2 O 3 as CrO 3 in an oxidation atmosphere above 1200 °C increased significantly in the Si-B-Cr alloy. The simultaneous volatilization of B 2 O 3 and CrO 3 resulted in the formation of loose oxide layers in the CrB 2 region of the Si-B-Cr alloy, leading to severe oxidation.

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“…Hydrogen is one of the ideal new energy sources because it cohosts high calorific value, abundant resources, diverse utilization forms, and environmental friendliness characteristics. , However, broad utilization of hydrogen energy has still been hindered because of the lack of hydrogen storage and transportation technologies. , Among the solid-state hydrogen storage materials, Mg/MgH 2 is considered one of the intriguing candidates due to its outstanding advantages of high hydrogen storage capacity (7.6 wt %), cheap cost, and lightweight nature. , However, the commercial application of Mg/MgH 2 is still numbered because of its sluggish kinetics ( E a ∼ 161 kJ/mol) and large reaction enthalpy (Δ H ∼ 75 kJ/mol). − …”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of a Facilely Synthesized MnV₂O₆ Catalyst on Improving the Low-Temperature Kinetic Properties of MgH₂

et al. 2022

ACS Appl. Mater. Interfaces

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While magnesium hydride (MgH2) has drawn considerable attention as a promising hydrogen storage material, it suffers from sluggish kinetics and high desorption temperature, hindering potential applications. Herein, we show that the hydrogen desorption kinetics of MgH2 can be significantly improved using bimetallic oxide MnV2O6 as the catalyst. A MgH2–MnV2O6 composite was prepared by a high-energy ball milling method. The results showed that the MgH2–MnV2O6 composite can release 5.57 wt % hydrogen within 10 min under 250 °C. The dehydrogenated MgH2–MnV2O6 sample can absorb 3.09 wt % hydrogen within 10 min under 50 °C. Notably, the reversible hydrogen storage property did not degrade at least within 100 cycles, showing excellent cycle stability. X-ray diffraction and transmittance electron microscopy measurements revealed that MnV alloy and V2O3 phases were formed during the ball milling process, leading to the synergistic catalytic effect. We argue that the bimetallic MnV alloy plays key catalytic roles in this system because MnV alloy can promote the fracture of the H–H and Mg–H bonds, significantly improving the hydrogen storage kinetics and low-temperature reversible hydrogen storage performance of MgH2.

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Thermodynamics and kinetics of hydriding and dehydriding reactions in Mg-based hydrogen storage materials

Cited by 333 publications

References 168 publications

Towards Understanding the Corrosion Behavior of Zinc‐Metal Anode in Aqueous Systems: From Fundamentals to Strategies

Towards Understanding the Corrosion Behavior of Zinc‐Metal Anode in Aqueous Systems: From Fundamentals to Strategies

Oxidation Behavior of the Si-B-X (X = Mo, Cr, or Ti) Alloys in the Temperature Range of 1000–1400 °C

Synergistic Effect of a Facilely Synthesized MnV₂O₆ Catalyst on Improving the Low-Temperature Kinetic Properties of MgH₂

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Thermodynamics and kinetics of hydriding and dehydriding reactions in Mg-based hydrogen storage materials

Cited by 333 publications

References 168 publications

Towards Understanding the Corrosion Behavior of Zinc‐Metal Anode in Aqueous Systems: From Fundamentals to Strategies

Towards Understanding the Corrosion Behavior of Zinc‐Metal Anode in Aqueous Systems: From Fundamentals to Strategies

Oxidation Behavior of the Si-B-X (X = Mo, Cr, or Ti) Alloys in the Temperature Range of 1000–1400 °C

Synergistic Effect of a Facilely Synthesized MnV2O6 Catalyst on Improving the Low-Temperature Kinetic Properties of MgH2

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Synergistic Effect of a Facilely Synthesized MnV₂O₆ Catalyst on Improving the Low-Temperature Kinetic Properties of MgH₂