Enhanced Hydrogen Storage Properties of Li-RHC System with In-House Synthesized AlTi3 Nanoparticles

In recent years, the use of selected additives for improving the kinetic behavior of the system 2LiH + MgB2 (Li-RHC) has been investigated. As a result, it has been reported that some additives (e.g., 3TiCl3·AlCl3), by reacting with the Li-RHC components, form nanostructured phases (e.g., AlTi3) possessing peculiar microstructural properties capable of enhancing the system’s kinetic behavior. The effect of in-house-produced AlTi3 nanoparticles on the hydrogenation/dehydrogenation kinetics of the 2LiH + MgB2 (Li-RHC) system is explored in this work, with the aim of reaching high hydrogen storage performance. Experimental results show that the AlTi3 nanoparticles significantly improve the reaction rate of the Li-RHC system, mainly for the dehydrogenation process. The observed improvement is most likely due to the similar structural properties between AlTi3 and MgB2 phases which provide an energetically favored path for the nucleation of MgB2. In comparison with the pristine material, the Li-RHC doped with AlTi3 nanoparticles has about a nine times faster dehydrogenation rate. The results obtained from the kinetic modeling indicate a change in the Li-RHC hydrogenation reaction mechanism in the presence of AlTi3 nanoparticles.

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Catalytic Effect of Facile Synthesized TiH1.971 Nanoparticles on the Hydrogen Storage Properties of MgH2

Nanomaterials ◽

10.3390/nano9101370 ◽

2019 ◽

Vol 9 (10) ◽

pp. 1370 ◽

Cited By ~ 2

Author(s):

Zhang ◽

Lu ◽

Ji ◽

Yan ◽

Sun ◽

...

Keyword(s):

Hydrogen Storage ◽

Catalytic Effect ◽

Catalyst Concentration ◽

Hydrogen Storage Properties ◽

Storage Performance ◽

Milling Method ◽

Wet Chemical ◽

Hydrogen Storage Performance ◽

Kinetics Of ◽

Storage Properties

Abstract: Catalytic doping plays an important role in enhancing the hydrogen storage performance of MgH2, while finding an efficient and reversible catalyst remains to be a great challenge in enhancing the de/rehydrogenation properties of MgH2. Herein, a bidirectional nano-TiH1.971 catalyst was prepared by a wet chemical ball milling method and its effect on hydrogen storage properties of MgH2 was studied. The results showed that all the TiH1.971 nanoparticles were effective in improving the de/rehydrogenation kinetics of MgH2. The MgH2 composites doped with TiH1.971 could desorb 6.5 wt % H2 in 8 min at 300 °C, while the pure MgH2 only released 0.3 wt % H2 in 8 min and 1.5 wt % H2 even in 50 min. It was found that the smaller the size of the TiH1.971 particles, the better was the catalytic effect in promoting the performance of MgH2. Besides, the catalyst concentration also played an important role and the 5 wt %-c-TiH1.971 modified system was found to have the best hydrogen storage performance. Interestingly, a significant hydrogen absorption amount of 4.60 wt % H2 was evidenced for the 5 wt %-c-TiH1.971 doped MgH2 within 10 min at 125 °C, while MgH2 absorbed only 4.11 wt% hydrogen within the same time at 250 °C. The XRD results demonstrated that the TiH1.971 remained stable in cycling and could serve as an active site for hydrogen transportation, which contributed to the significant improvement of the hydrogen storage properties of MgH2.

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Facile synthesis of Co/Pd supported by few-walled carbon nanotubes as an efficient bidirectional catalyst for improving the low temperature hydrogen storage properties of magnesium hydride

Journal of Materials Chemistry A ◽

10.1039/c8ta12431k ◽

2019 ◽

Vol 7 (10) ◽

pp. 5277-5287 ◽

Cited By ~ 21

Author(s):

Meijia Liu ◽

Xuezhang Xiao ◽

Shuchun Zhao ◽

Man Chen ◽

Jianfeng Mao ◽

...

Keyword(s):

Carbon Nanotubes ◽

Hydrogen Storage ◽

Metal Hydrides ◽

Hydrogen Desorption ◽

Facile Synthesis ◽

Hydrogen Storage Properties ◽

Storage Performance ◽

Hydrogen Storage Performance ◽

Walled Carbon Nanotubes ◽

Storage Properties

Catalytic doping is important for enhancing the hydrogen storage performance of metal hydrides, but it is challenging to develop a single catalyst to enhance both hydrogen desorption and absorption to a certain degree.

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Effect of Mischmetal Introduction on Hydrogen Storage Properties in Impure Hydrogen Gas of Ti-Fe-Mn-Co Alloys

Metals ◽

10.3390/met10121574 ◽

2020 ◽

Vol 10 (12) ◽

pp. 1574

Author(s):

Ruochen Shen ◽

Chaohui Pu ◽

Xiaoou Xu ◽

Youpeng Xu ◽

Zhilin Li ◽

...

Keyword(s):

Hydrogen Storage ◽

Storage Capacity ◽

Absorption Capacity ◽

Hydrogen Gas ◽

Hydrogen Storage Capacity ◽

Hydrogen Storage Properties ◽

Storage Performance ◽

Hydrogen Storage Performance ◽

Co Alloys ◽

Storage Properties

The research aims to study the effect of adding mischmetal (Mm) to the TiFe0.86Mn0.07Co0.07 alloy on its hydrogen storage performance and cyclic stability. The results show that TiFe0.86Mn0.07Co0.07 + x% Mm (x = 0,4,6,8) alloys can be easily activated. The hydrogen absorption capacity of TiFe0.86Mn0.07Co0.07 + 4% Mm reaches 1.76 wt% (mass fraction) at 298 K. With the increase of Mm addition, the hydrogen storage capacity decreases slightly. Furthermore, after 40 absorption and desorption cycles in hydrogen containing 250 ppm O2, the alloy still has 36% of its initial hydrogen storage capacity, and the alloy can recover 93% of its hydrogen storage capacity through heat treatment.

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Roles of Ti-Based Catalysts on Magnesium Hydride and Its Hydrogen Storage Properties

Inorganics ◽

10.3390/inorganics9050036 ◽

2021 ◽

Vol 9 (5) ◽

pp. 36

Author(s):

Chengshang Zhou ◽

Jingxi Zhang ◽

Robert C. Bowman ◽

Zhigang Zak Fang

Keyword(s):

Hydrogen Storage ◽

Fundamental Principle ◽

Magnesium Hydride ◽

Elemental Abundance ◽

High Hydrogen ◽

Hydrogen Storage Properties ◽

The Past ◽

Kinetic Mechanisms ◽

Kinetics Of ◽

Storage Properties

Magnesium-based hydrides are considered as promising candidates for solid-state hydrogen storage and thermal energy storage, due to their high hydrogen capacity, reversibility, and elemental abundance of Mg. To improve the sluggish kinetics of MgH2, catalytic doping using Ti-based catalysts is regarded as an effective approach to enhance Mg-based materials. In the past decades, Ti-based additives, as one of the important groups of catalysts, have received intensive endeavors towards the understanding of the fundamental principle of catalysis for the Mg-H2 reaction. In this review, we start with the introduction of fundamental features of magnesium hydride and then summarize the recent advances of Ti-based additive doped MgH2 materials. The roles of Ti-based catalysts in various categories of elemental metals, hydrides, oxides, halides, and intermetallic compounds were overviewed. Particularly, the kinetic mechanisms are discussed in detail. Moreover, the remaining challenges and future perspectives of Mg-based hydrides are discussed.

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LiAlH4supported on TiO2/hierarchically porous carbon nanocomposites with enhanced hydrogen storage properties

Inorganic Chemistry Frontiers ◽

10.1039/c6qi00200e ◽

2016 ◽

Vol 3 (12) ◽

pp. 1536-1542 ◽

Cited By ~ 9

Author(s):

Yaran Zhao ◽

Mo Han ◽

Haixia Wang ◽

Chengcheng Chen ◽

Jun Chen

Keyword(s):

Hydrogen Storage ◽

Porous Carbon ◽

Carbon Nanocomposites ◽

Hierarchically Porous ◽

Hydrogen Storage Properties ◽

Storage Performance ◽

Hydrogen Storage Performance ◽

Storage Properties

LiAlH4supported on TiO2/hierarchically porous carbon (LAH–TiO2/HPC) nanocomposites were prepared and they exhibited enhanced hydrogen storage performance.

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Crosslinking modification of a porous metal–organic framework (UIO-66) and hydrogen storage properties

New Journal of Chemistry ◽

10.1039/d0nj01485k ◽

2020 ◽

Vol 44 (26) ◽

pp. 11164-11171

Author(s):

Zhuo Wang ◽

Jin Liu ◽

Zhen Li ◽

Xianbiao Wang ◽

Ping Wang ◽

...

Keyword(s):

Hydrogen Storage ◽

Thermal Performance ◽

Metal Organic Framework ◽

Porous Metal ◽

Hydrogen Storage Properties ◽

Storage Performance ◽

Metal Organic ◽

Hydrogen Storage Performance ◽

Storage Properties ◽

Organic Framework

A crosslinked MOF material UIO-66-DETA-CL is synthesized, and has stronger thermal performance and hydrogen storage performance than before crosslinking.

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Improved hydrogen storage properties of MgH2 by addition of Co2NiO nanoparticles

RSC Advances ◽

10.1039/c5ra07094e ◽

2015 ◽

Vol 5 (75) ◽

pp. 60983-60989 ◽

Cited By ~ 51

Author(s):

N. Juahir ◽

N. S. Mustafa ◽

A. M. Sinin ◽

M. Ismail

Keyword(s):

Hydrogen Storage ◽

Hydrogen Storage Properties ◽

Desorption Temperature ◽

Kinetics Of ◽

Storage Properties

The result showed that the addition of 10 wt% Co2NiO to the MgH2 exhibits a lower onset desorption temperature. The dehydrogenation and rehydrogenation kinetics of MgH2 + 10 wt% Co2NiO were also improved compared to un-doped MgH2.

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Hydrogen storage properties of nanostructured MgH2/TiH2 composite prepared by ball milling under high hydrogen pressure

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2011.05.180 ◽

2011 ◽

Vol 36 (17) ◽

pp. 10828-10833 ◽

Cited By ~ 70

Author(s):

H. Shao ◽

M. Felderhoff ◽

F. Schüth

Keyword(s):

Hydrogen Storage ◽

Ball Milling ◽

Hydrogen Pressure ◽

High Hydrogen ◽

Hydrogen Storage Properties ◽

High Hydrogen Pressure ◽

Storage Properties

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Hydrogen Storage Properties of Mg-Ni Alloy Catalysed by Multi-Walled Carbon Nanotubes

Materials Science Forum ◽

10.4028/www.scientific.net/msf.654-656.2843 ◽

2010 ◽

Vol 654-656 ◽

pp. 2843-2846

Author(s):

Sima Aminorroaya ◽

Hua Kun Liu

Keyword(s):

Carbon Nanotubes ◽

Hydrogen Storage ◽

Cast Sample ◽

Storage Performance ◽

Milled Sample ◽

Ni Alloy ◽

Multi Walled Carbon Nanotubes ◽

Hydrogen Storage Performance ◽

Walled Carbon Nanotubes ◽

Storage Properties

The hydrogen storage performance of ball-milled sample of cast Mg-6 wt% Ni alloy was investigated. Morphology and microstructure of the cast sample and achieved powders were evaluated by high-resolution scanning electron microscopy. The activation characteristics of ball-milled alloy are compared with those of the materials obtained by ball-milling of 5 wt% multi-walled carbon nanotubes (MWCNTs) for 2 hours. MWCNTs enhanced the absorption kinetics considerably. The hydrogen content of modified powder by MWCNTs reached to the maximum hydrogen capacity within two minutes of exposure to hydrogen at 370°C and 2MPa pressure. The evidence is provided that nucleation and growth of hydrides accelerate drastically by homogenously distribution of MWCNTs on the surface of ball-milled powders.

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