Hydrogen storage performance of Mg-based composites prepared by spark plasma sintering

Liu, Jian; Song, Xiping; Pei, P.; Chen, G.L.

doi:10.1016/j.jallcom.2009.06.144

Cited by 17 publications

(10 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The only problem related to this method is the poor cycle stability of the melt-spun alloys, due to the disappearing of the metastable structures generated by melt-spinning [78]. Another attracting technique is spark plasma sintering (SPS), due to its ability to easily synthesize metal powders, with different melting temperatures within just 5-10 min [79]. This technique involves generation of spark plasma through direct pulse current and working concurrently with a uniaxial pressure.…”

Section: Comparison Between Hydriding Kinetics Of Materials Prepared ...mentioning

confidence: 99%

A Comprehensive Review on Hydrogen Absorption Behaviour of Metal Alloys Prepared through Mechanical Alloying

Somo

Maponya

Davids

et al. 2020

Metals

View full text Add to dashboard Cite

Hydride-forming alloys are currently considered reliable and suitable hydrogen storage materials because of their relatively high volumetric densities, and reversible H2 absorption/desorption kinetics, with high storage capacity. Nonetheless, their practical use is obstructed by several factors, including deterioration and slow hydrogen absorption/desorption kinetics resulting from the surface chemical action of gas impurities. Lately, common strategies, such as spark plasma sintering, mechanical alloying, melt spinning, surface modification and alloying with other elements have been exploited, in order to overcome kinetic barriers. Through these techniques, improvements in hydriding kinetics has been achieved, however, it is still far from that required in practical application. In this review, we provide a critical overview on the effect of mechanical alloying of various metal hydrides (MHs), ranging from binary hydrides (CaH2, MgH2, etc) to ternary hydrides (examples being Ti-Mn-N and Ca-La-Mg-based systems), that are used in solid-state hydrogen storage, while we also deliver comparative study on how the aforementioned alloy preparation techniques affect H2 absorption/desorption kinetics of different MHs. Comparisons have been made on the resultant material phases attained by mechanical alloying with those of melt spinning and spark plasma sintering techniques. The reaction mechanism, surface modification techniques and hydrogen storage properties of these various MHs were discussed in detail. We also discussed the remaining challenges and proposed some suggestions to the emerging research of MHs. Based on the findings obtained in this review, the combination of two or more compatible techniques, e.g., synthesis of metal alloy materials through mechanical alloying followed by surface modification (metal deposition, metal-metal co-deposition or fluorination), may provide better hydriding kinetics.

show abstract

Section: Comparison Between Hydriding Kinetics Of Materials Prepared ...mentioning

confidence: 99%

A Comprehensive Review on Hydrogen Absorption Behaviour of Metal Alloys Prepared through Mechanical Alloying

Somo

Maponya

Davids

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…This observation is a clear indication that the amount of hydrogen absorbed on an alloy material and the adsorption rate are more dependent on the purity of the alloy surface. Methods such as spark plasma sintering [9], mechanical alloying [10], melt spinning [11], high hydrogen pressure method [12], hydriding combustion synthesis [13], surface modification (such as autocatalytic deposition of palladium) [13,14] and alloying with other elements (substitution of B-component in AB 5 ) [15,16] have been widely studied for improvement of hydrogen absorption kinetics of metal hydrides from gas mixture. Our recent findings [17] demonstrated the improvement of poisoning tolerance and hydrogen absorption using palladium black addition on AB 5 alloy followed by electroless Pd deposition.…”

Section: Introductionmentioning

confidence: 99%

Improvement of hydriding kinetics of LaNi5-type metal alloy through substitution of nickel with tin followed by palladium deposition

et al. 2021

View full text Add to dashboard Cite

Hydrogen absorption performances of LaNi 5 alloy are sensitive to the surface reactions with poisonous gases, such as oxygen, readily forming oxides/hydroxides. In this study, we report the studies on the hydrogen absorption behaviour of AB 5 -type hydrogen storage alloys, formed by LaNi (5-x) Sn x (X = 0.2) followed by electroless Pd deposition. The uncoated and Pd-coated materials were characterized using scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS), atomic absorption spectroscopy (AAS), X-ray diffraction (XRD) and Brunauer-Emmet-Teller. XRD analyses indicated that both LaNi 5 and LaNi 4.8 Sn 0.2 alloys crystallize in CaCu 5 -type crystal structure, while SEM analysis and particle size distribution histograms showed increment in particle size upon Sn incorporation. Palladium particles on the surface of the materials were detected by AAS and EDS analyses. Furthermore, substitution of a small fraction of Ni by Sn leads to an increase in hydrogen absorption capacity even without activation. Moreover, a decrease in hydrogen absorption rate was observed for LaNi 4.8 Sn 0.2 alloy and this was related to an increment in the crystalline unit cell volume. Kinetic curves of Pd-coated alloys show superior absorption kinetics compared to their uncoated counterparts due to high affinity of Pd for hydrogen.

show abstract

“…Since the ultrafine crystalline phases (like yttrium hydrides) is helpful to stabilize the nanocrystalline structure by preventing further crystal coarsening during the thermal process, Mg-Cu-Ni-Y [10] alloys, which are prepared by melt spinning, show excellent hydrogen sorption kinetics. Some other methods aim to improve the performances of hydrogen storage alloys are also reported, including ball milling with catalyst [11][12][13], surface modification [14] and several new sample preparing methods such as hydriding combustion synthesis (HCS) [15], melting-spun [16], and spark plasma sintering [17]. Recently, attentions have been moved to the LaMg 2 Ni alloy.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen storage properties and phase structures of RMg2Ni (R=La, Ce, Pr, Nd) alloys

Pei

Han

Wang

et al. 2012

Materials Science and Engineering: B

View full text Add to dashboard Cite

Hydrogen storage performance of Mg-based composites prepared by spark plasma sintering

Cited by 17 publications

References 13 publications

A Comprehensive Review on Hydrogen Absorption Behaviour of Metal Alloys Prepared through Mechanical Alloying

A Comprehensive Review on Hydrogen Absorption Behaviour of Metal Alloys Prepared through Mechanical Alloying

Improvement of hydriding kinetics of LaNi5-type metal alloy through substitution of nickel with tin followed by palladium deposition

Hydrogen storage properties and phase structures of RMg2Ni (R=La, Ce, Pr, Nd) alloys

Contact Info

Product

Resources

About