Improvement in the Hydrogen Storage Properties of MgH2 by Adding NaAlH4

Kwak, Young-Jun; Song, Myoung-Youp; Lee, Ki-Tae

doi:10.3390/met14020227

Cited by 2 publications

(3 citation statements)

References 30 publications

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“…Kwak et al [ 94 ] employed reactive ball milling to synthesize MgH 2 -NaAlH 4 composite materials with varying ratios. As the NaAlH 4 content increased, a notable trend was observed in the curve depicting the ratio of hydrogen release at the temperature peak to the increase in temperature.…”

Section: Nanocomposite Mg-based Hydrides Via Ball Millingmentioning

confidence: 99%

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Ball Milling Innovations Advance Mg-Based Hydrogen Storage Materials Towards Practical Applications

Xu,

Li,

Hou

et al. 2024

Materials

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Mg-based materials have been widely studied as potential hydrogen storage media due to their high theoretical hydrogen capacity, low cost, and abundant reserves. However, the sluggish hydrogen absorption/desorption kinetics and high thermodynamic stability of Mg-based hydrides have hindered their practical application. Ball milling has emerged as a versatile and effective technique to synthesize and modify nanostructured Mg-based hydrides with enhanced hydrogen storage properties. This review provides a comprehensive summary of the state-of-the-art progress in the ball milling of Mg-based hydrogen storage materials. The synthesis mechanisms, microstructural evolution, and hydrogen storage properties of nanocrystalline and amorphous Mg-based hydrides prepared via ball milling are systematically reviewed. The effects of various catalytic additives, including transition metals, metal oxides, carbon materials, and metal halides, on the kinetics and thermodynamics of Mg-based hydrides are discussed in detail. Furthermore, the strategies for synthesizing nanocomposite Mg-based hydrides via ball milling with other hydrides, MOFs, and carbon scaffolds are highlighted, with an emphasis on the importance of nanoconfinement and interfacial effects. Finally, the challenges and future perspectives of ball-milled Mg-based hydrides for practical on-board hydrogen storage applications are outlined. This review aims to provide valuable insights and guidance for the development of advanced Mg-based hydrogen storage materials with superior performance.

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Section: Nanocomposite Mg-based Hydrides Via Ball Millingmentioning

confidence: 99%

“…Effects of metal hydrides on the hydrogen storage properties of Mg-based hydride nanocomposites[92][93][94][95][96].…”

mentioning

confidence: 99%

Ball Milling Innovations Advance Mg-Based Hydrogen Storage Materials Towards Practical Applications

Xu,

Li,

Hou

et al. 2024

Materials

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“…However, sluggish de-/absorption kinetics and stable thermodynamic characteristics cause it to have high operation temperature and inferior sorption rate [25]. To this end, massive strategies have been carried out to tailor its thermodynamics and kinetics, combining the alloying, nanosizing, catalyzing and compositing with other hydrides, and so on [26][27][28][29]. Recently, by adding the AB 2 or BCC hydrogen-storage alloys, with excellent hydrogen de-/absorption features at room temperature, as catalytic additives into MgH 2 to fabricate nano-compounds, one can regulate the thermodynamics and kinetics of MgH 2 during the de-/hydrogenation process.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Hydrogen-Storage Properties of MgH2 Catalyzed via a Cerium Doped TiCrV BCC Alloy

Xiao,

Zhang,

et al. 2024

Metals

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In this work, Ce-doped Ti6Cr14V80 BCC hydrogen-storage alloys have been synthesized as catalysts to enhance the hydrogen-storage performance of MgH2 based on its room-temperature activation features and excellent durability. The Ti6Cr14V80Ce1 alloy was pre-ball milled under a hydrogen atmosphere into a Ti6Cr14V80Ce1Hx hydride. Different amounts of the Ti6Cr14V80Ce1Hx hydride were incorporated into MgH2 by ball milling to obtain the MgH2 + y wt%Ti6Cr14V80Ce1Hx (y = 0, 3, 5, 10, 15) nano-composites. With an optimization doping of 10 wt%Ti6Cr14V80Ce1Hx, the initial dehydrogenated temperature was decreased to 160 °C. Moreover, the composite can rapidly release 6.73 wt% H2 within 8 min at 230 °C. Also, it can absorb 2.0 wt% H2 within 1 h even at room temperature and uptake 4.86 wt% H2 within 10 s at 125 °C. In addition, the apparent dehydrogenated activation energy of the MgH2 + 10 wt%Ti6Cr14V80Ce1Hx composite was calculated to be 62.62 kJ mol−1 fitted by the JMAK model. The capacity retention was kept as 84% after 100 cycles at 300 °C. The ball milled Ti6Cr14V80Ce1Hx transformed from the initial FCC phase structure into a BCC phase after complete dehydrogenation and back into an FCC phase when fullly hydrogenated. A catalyst mechanism analysis revealed that the ‘autocatalytic effect’ originating in Ti6Cr14V80Ce1Hx plays a crucial role in boosting the de-/hydrogenation properties of MgH2. This work provides meaningful insights into rational designs of nano-compositing with different hydrogen-storage alloy catalyzed MgH2.

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Improvement in the Hydrogen Storage Properties of MgH2 by Adding NaAlH4

Cited by 2 publications

References 30 publications

Ball Milling Innovations Advance Mg-Based Hydrogen Storage Materials Towards Practical Applications

Ball Milling Innovations Advance Mg-Based Hydrogen Storage Materials Towards Practical Applications

Enhanced Hydrogen-Storage Properties of MgH2 Catalyzed via a Cerium Doped TiCrV BCC Alloy

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