Highly Efficient Hydrogen Storage Capacity of 2.5 wt % Above 0.1 MPa Using Y and Cr Codoped V-Based Alloys

Ding, Nan; Li, Yichen; Liang, Fei; Liu, Baozhong; Liu, Wanqiang; Wang, Qingshuang; Wang, Limin

doi:10.1021/acsaem.1c03901

Cited by 24 publications

(8 citation statements)

References 28 publications

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“…As early as 1951, MgH 2 was first synthesized by direct reaction of Mg and H 2 . In the past decades, great efforts have been devoted to the development of Mg-based hydrogen storage composites with fast kinetics, low operation temperature, high reversible capacity, long cycling life, low cost, and high safety, as landmarked by the application of alloying [ 21 , 22 , 23 , 24 , 25 , 26 ], nano-structuring [ 27 , 28 , 29 , 30 , 31 ], and catalyzing [ 32 , 33 , 34 , 35 , 36 ]. Alloying is a simple and mature method to modify Mg/MgH 2 .…”

Section: Introductionmentioning

confidence: 99%

Nanostructuring of Mg-Based Hydrogen Storage Materials: Recent Advances for Promoting Key Applications

Ren

Zhang

et al. 2023

Nano-Micro Lett.

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Highlights A comprehensive discussion of the recent advances in the nanostructure engineering of Mg-based hydrogen storage materials is presented. The fundamental theories of hydrogen storage in nanostructured Mg-based hydrogen storage materials and their practical applications are reviewed. The challenges and recommendations of current nanostructured hydrogen storage materials are pointed out.

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Section: Introductionmentioning

confidence: 99%

Nanostructuring of Mg-Based Hydrogen Storage Materials: Recent Advances for Promoting Key Applications

Ren

Zhang

et al. 2023

Nano-Micro Lett.

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“…and desorption (des.) seem to be sufficient materials for hydrogen storage. , For these reasons, the AB 5 -type LaNi 5 -based metallic hydride (A-rare earth element, B-transition metal, or p-block element) alloys can be considered as prospective HS materials. These materials have been extensively studied for HS applications or as materials for electrodes in nickel-metal hydride batteries. , They are characterized by the unique kinetics and thermodynamics of HS .…”

Section: Introductionmentioning

confidence: 99%

Influence of Fe on the Hydrogen Storage Properties of LaCeNi Alloys

Král

Chesalkin²,

Čermák

et al. 2023

Langmuir

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LaNi 5 intermetallic compounds with a hexagonal CaCu 5 type structure can react reversibly with hydrogen. The element substitutions in LaNi 5 can significantly change the hydrogenation properties, allowing to tune them to a large extent. It could be very advantageous to partially replace Ni or La with other elements to reduce the cost of this alloy as well as the equilibrium pressure of absorption and desorption. The hydrogen storage properties of ball-milled AB 5 alloys containing the elements La, Ce (A-rare elements) and Ni, Fe (B-transition metals) were studied in this paper. Although the substitution of Ni (atomic radius 1.49 Å) with Fe atom (atomic radius 1.56 Å) increased the unit cell volume from 86.4149 to 87.947 5 Å 3 of the LaNi 5 phase, its hydrogen storage capacity was still close to the value 1.4 wt %. The enthalpy (ΔH) of hydride formation for hydrogen absorption and desorption of the experimental alloys was in the range of 29−32.6 kJ/mol. A very favorable effect of Fe on the sorption properties was found in the significant reduction of the equilibrium pressure of absorption and desorption. These studied experimental Fe-containing alloys were able to store hydrogen at 300 K and with pressure under 0.1 MPa. The fastest sorption kinetics of hydrogen was found in alloys with FeNi phase particles located on the surface of the powder. However, if the FeNi phase was segregated at the grain boundaries, it acted as a barrier limiting the growth of the hydride phase. This led to a decrease of the hydride sorption kinetics.

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“…However, the storage and transportation of hydrogen remain formidable challenges that impede its widespread adoption. 2,3 To address this, solid-state hydrogen storage is considered the safest and most effective method, particularly for hydrogen transportation. 4,5 Consequently, the development of high costefficient hydrogen storage materials has received considerable attention.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Hydrogen Storage Behavior of TiCrMo Alloys Fabricated via Melt Spinning

Hu,

Li,

Zhou

et al. 2023

ACS Appl. Energy Mater.

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High-density hydrogen storage materials are crucial for the advancement of hydrogen energy. This work investigates the synthesis and characterization of a low-cost and high-performance Ti 45 Cr 52 Mo 3 alloy through arc-melting and melt-spinning processes. The alloy exhibits a significant dehydriding density of 2.4 wt % at 85 °C, indicating its potential as a hydrogen storage material. A comprehensive analysis of the alloy's microstructural evolution, de/hydrogenation thermodynamics, and cyclic properties has been conducted. The melt-spinning process improves compositional uniformity and restricts the β-Ti phase transformation in the low-Mo alloy. Consequently, the hydrogen absorption capacity increases from 1.5 to 3.3 wt % after melt-spinning, with a dehydriding plateau pressure of 0.2 MPa at 85 °C. Above 0.1 MPa, the alloy exhibits an effective dehydriding density of 2.40 wt %. The enthalpy value of the Ti 45 Cr 52 Mo 3 alloy during de/hydrogenation, calculated using the van't Hoff equation, aligns with that of V-based BCC hydrogen storage alloys. This work also discusses the structural transformations during de/hydrogenation and explains the underlying causes of capacity attenuation after the de/hydrogenation cycle. These findings offer valuable insights into the development of high-density hydrogen storage materials, presenting a promising pathway for advancing hydrogen energy technologies.

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Highly Efficient Hydrogen Storage Capacity of 2.5 wt % Above 0.1 MPa Using Y and Cr Codoped V-Based Alloys

Cited by 24 publications

References 28 publications

Nanostructuring of Mg-Based Hydrogen Storage Materials: Recent Advances for Promoting Key Applications

Nanostructuring of Mg-Based Hydrogen Storage Materials: Recent Advances for Promoting Key Applications

Influence of Fe on the Hydrogen Storage Properties of LaCeNi Alloys

Microstructure and Hydrogen Storage Behavior of TiCrMo Alloys Fabricated via Melt Spinning

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