Achieving superior hydrogen storage properties of MgH2 by the effect of TiFe and carbon nanotubes

Lu, Xia; Zhang, Liuting; Yu, Haijie; Lu, Zhiyu; He, Jianjun; Zheng, Jiaguang; Wu, Fuying; Chen, Lixin

doi:10.1016/j.cej.2021.130101

Cited by 151 publications

(50 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…At the same time, nanotubes, owing to their morphology, are suggested to promote the diffusion of hydrogen through the interior of the particles. It was indicated that CNT may also have a positive effect on the dissociation of hydrogen [142], and can suppress extensive grain growth during cycling [144,145]. The above cited examples demonstrate the significant advantages of applying multiple catalysts to improve the hydrogen storage performance of Mg-based materials.…”

Section: Utilization Of Synergy Between Multiple Catalystsmentioning

confidence: 97%

Improved H-Storage Performance of Novel Mg-Based Nanocomposites Prepared by High-Energy Ball Milling: A Review

Révész

Gajdics

2021

Energies

View full text Add to dashboard Cite

Hydrogen storage in magnesium-based composites has been an outstanding research area including a remarkable improvement of the H-sorption properties of this system in the last 5 years. Numerous additives of various morphologies have been applied with great success to accelerate the absorption/desorption reactions. Different combinations of catalysts and preparation conditions have also been explored to synthesize better hydrogen storing materials. At the same time, ball milling is still commonly and effectively applied for the fabrication of Mg-based alloys and composites in order to reduce the grain size to nanometric dimensions and to disperse the catalyst particles over the surface of the host material. In this review, we present the very recent progress, from 2016 to 2021, on catalyzing the hydrogen sorption of Mg-based materials by ball milling. The various catalyzing routes enhancing the hydrogenation performance, including in situ formation of catalysts and synergistic improvement achieved by using multiple additives, will also be summarized. At the end of this work, some thoughts on the prospects for future research will be highlighted.

show abstract

Section: Utilization Of Synergy Between Multiple Catalystsmentioning

confidence: 97%

Improved H-Storage Performance of Novel Mg-Based Nanocomposites Prepared by High-Energy Ball Milling: A Review

Révész

Gajdics

2021

Energies

View full text Add to dashboard Cite

show abstract

“…Among the different hydrogen storage materials, magnesium (Mg) has been considered one of the excellent materials for hydrogen storage material because of its different forms in hydrides [81][82][83][84]. Mg can be formed as intermetallic, elemental and complex hydrides, such as magnesium hydride (MgH 2 ) [85,86], Mg 2 NiH x [87,88], Mg(AlH 4 ) 2 [89,90] and Mg(BH 4 ) 2 [91][92][93][94]. The Mg/MgH 2 has been considered one of the efficient hydride materials because of its numerous advantages, such as high gravimetric hydrogen capacity (7.6 wt %), high volumetric hydrogen capacity (110 g hydrogen/liter), excellent reversibility at nanoscale and stability during cycle performances [62,[95][96][97].…”

Section: Significance Of Magnesium Hydride and Benefits Of Polymeric ...mentioning

confidence: 99%

Impact of Polymers on Magnesium-Based Hydrogen Storage Systems

Thangarasu

2022

Polymers

View full text Add to dashboard Cite

In the present scenario, much importance has been provided to hydrogen energy systems (HES) in the energy sector because of their clean and green behavior during utilization. The developments of novel techniques and materials have focused on overcoming the practical difficulties in the HES (production, storage and utilization). Comparatively, considerable attention needs to be provided in the hydrogen storage systems (HSS) because of physical-based storage (compressed gas, cold/cryo compressed and liquid) issues such as low gravimetric/volumetric density, storage conditions/parameters and safety. In material-based HSS, a high amount of hydrogen can be effectively stored in materials via physical or chemical bonds. In different hydride materials, Mg-based hydrides (Mg–H) showed considerable benefits such as low density, hydrogen uptake and reversibility. However, the inferior sorption kinetics and severe oxidation/contamination at exposure to air limit its benefits. There are numerous kinds of efforts, like the inclusion of catalysts that have been made for Mg–H to alter the thermodynamic-related issues. Still, those efforts do not overcome the oxidation/contamination-related issues. The developments of Mg–H encapsulated by gas-selective polymers can effectively and positively influence hydrogen sorption kinetics and prevent the Mg–H from contaminating (air and moisture). In this review, the impact of different polymers (carboxymethyl cellulose, polystyrene, polyimide, polypyrrole, polyvinylpyrrolidone, polyvinylidene fluoride, polymethylpentene, and poly(methyl methacrylate)) with Mg–H systems has been systematically reviewed. In polymer-encapsulated Mg–H, the polymers act as a barrier for the reaction between Mg–H and O2/H2O, selectively allowing the H2 gas and preventing the aggregation of hydride nanoparticles. Thus, the H2 uptake amount and sorption kinetics improved considerably in Mg–H.

show abstract

“…On the other hand, the reversible binary hydride, MgH 2 , is a promising material under the US department of energy (USDOE) hydrogen storage target considerations, except that >350 • C is required for the liberation of hydrogen [2]. Researchers demonstrated that the hydrogen desorption temperature of MgH 2 can be lowered substantially by incorporating suitable additives [3][4][5][6][7][8][9][10][11][12][13][14][15]. Additives from the categories of metal oxides [3], transition metals [4,5], rock salts [6,7], intermetallic alloys [8], nitrides [9], halides [10,11] and carbon nanostructures [12][13][14][15] were found to be impactful for MgH 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Researchers demonstrated that the hydrogen desorption temperature of MgH 2 can be lowered substantially by incorporating suitable additives [3][4][5][6][7][8][9][10][11][12][13][14][15]. Additives from the categories of metal oxides [3], transition metals [4,5], rock salts [6,7], intermetallic alloys [8], nitrides [9], halides [10,11] and carbon nanostructures [12][13][14][15] were found to be impactful for MgH 2 . Specifically, carbon nanostructures were proposed by various researchers because of the higher contact surface area and the ability to provide catalytically active contact surfaces.…”

Section: Introductionmentioning

confidence: 99%

Elucidating Evidence for the In Situ Reduction of Graphene Oxide by Magnesium Hydride and the Consequence of Reduction on Hydrogen Storage

et al. 2022

View full text Add to dashboard Cite

The current study highlights important information regarding how graphene oxide (GO) additive interacts with magnesium hydride (MgH2) and transforms to reduced graphene oxide (rGO). A mild reduction occurs during mechanical milling itself, whereas a strong reduction of GO happens concurrently with the oxidation of Mg formed during the dehydrogenation of MgH2. Owing to the in situ transformation of GO to rGO, the dehydrogenation temperature of MgH2 reduces by about 60 °C, whereas the hydrogen ab/desorption reaction kinetics of MgH2 increases by two orders of magnitude and the dehydrogenation activation energy decreases by about 20 kJ/mol. We have thoroughly scrutinized the transformation of GO to rGO by differential scanning calorimetry (DSC), X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy and atomic force microscopy (AFM) techniques. Interestingly, the GO to rGO transformation triggered by magnesium hydride in the current study further paves the way for the facile preparation of rGO- and MgO-decked rGO composites, which are important materials for energy storage applications.

show abstract

Achieving superior hydrogen storage properties of MgH2 by the effect of TiFe and carbon nanotubes

Cited by 151 publications

References 55 publications

Improved H-Storage Performance of Novel Mg-Based Nanocomposites Prepared by High-Energy Ball Milling: A Review

Improved H-Storage Performance of Novel Mg-Based Nanocomposites Prepared by High-Energy Ball Milling: A Review

Impact of Polymers on Magnesium-Based Hydrogen Storage Systems

Elucidating Evidence for the In Situ Reduction of Graphene Oxide by Magnesium Hydride and the Consequence of Reduction on Hydrogen Storage

Contact Info

Product

Resources

About