scholarly journals Conversion of multi-layered Mg-based carrier to hydrogen storage performance

2018 ◽  
Vol 238 ◽  
pp. 05002
Author(s):  
Ningning Zhou ◽  
Dongying Ju
Keyword(s):  
Hydrogen Storage ◽  
Trace Element ◽  
Hydrogen Atoms ◽  
Mixed Powder ◽  
Hydrogen Storage Properties ◽  
Gas Concentration ◽  
Experimental Process ◽  
Covering Method ◽  
Hydrogen Storage Performance ◽  
Storage Properties

The mixed powder method and covering method were adopted to prepare a composite that has hydrogen storage properties. In the experimental process, the alloy phases Mg2Ni and NiTi generated regularly; the penetration of the hydrogen atoms to the material was considered as the adsorption of the material to the hydrogen atoms; the original thermodynamic equation was edited; the crystal phases were optimized by adjusting the parameters about the material composition and gas concentration, so that providing advantageous channels of the hydrogen atoms in and out to improve the hydrogen storage properties. The results showed that integer multiples adjustment to trace element Ti could make hydrogen storage properties maximizing optimize and have controllability for the capacity and rate of hydrogen storage according to the newly editing equation. The innovation was to edit out equation that can improve the hydrogen storage properties through adjusting three parameters of trace element Ti, adsorption and penetration to find the most optimal condition improving the hydrogen storage properties.

Revealing the Role of Defects in Graphene Oxide on Evolution of Magnesium Nanocrystals and the Resulting Effects on Hydrogen Storage

2021 ◽  
Author(s):  
Dong Ju Han ◽  
Sangtae Kim ◽  
Eun Seon Cho
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Storage ◽  
Diffusion Path ◽  
Hydrogen Atoms ◽  
Hydrogen Storage Properties ◽  
Intensive Research ◽  
Size And Morphology ◽  
Storage Properties

The hydrogen storage properties of magnesium (Mg) considerably rely on the size and morphology of Mg particles that determine the diffusion path for hydrogen atoms. Despite the intensive research on...

Ti/Zr-Based Quasicrystals - Formation, Structure And Hydrogen Storage Properties

1998 ◽  
Vol 553 ◽  
Author(s):  
K. F. Kelton
Keyword(s):  
Hydrogen Storage ◽  
Rapid Quenching ◽  
Practical Reasons ◽  
Hydrogen Atoms ◽  
Hydrogen Storage Properties ◽  
Low Temperature Annealing ◽  
Icosahedral Quasicrystals ◽  
Crystal Phases ◽  
Complex Crystal ◽  
Storage Properties

AbstractMost common in Al-3d transition metal(TM) alloys, icosahedral quasicrystals (i-phase) are also found frequently in Ti/Zr-TM alloys. The Ti-TM-Si-O quasicrystals are metastable, produced only by rapid quenching, and are extremely disordered. In contrast, Ti-Zr-Ni i-phases are well ordered and stable, produced by relatively low temperature annealing, nearly 300°C below the melting temperature. Important for both basic and practical reasons, Ti/Zr-based quasicrystals can absorb significant quantities of hydrogen, up to two hydrogen atoms for each metal atom. The formation and structures of these quasicrystals and closely related complex crystal phases are discussed. The hydrogenation properties of these quasicrystals are presented and shown to be competitive with materials in current use for hydrogen storage and battery applications. Results from recent studies using hydrogen as a probe of the local structure of the quasicrystal and crystal approximant are presented.

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

2019 ◽  
Vol 7 (10) ◽  
pp. 5277-5287 ◽  
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.

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

Metals ◽  
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.

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

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1370 ◽  
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.

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

2016 ◽  
Vol 3 (12) ◽  
pp. 1536-1542 ◽  
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.

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

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.

Enhanced hydrogen storage properties of MgH2 with numerous hydrogen diffusion channels provided by Na2Ti3O7 nanotubes

2017 ◽  
Vol 5 (13) ◽  
pp. 6178-6185 ◽  
Author(s):  
Liuting Zhang ◽  
Lixin Chen ◽  
Xiulin Fan ◽  
Xuezhang Xiao ◽  
Jiaguang Zheng ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Hydrogen Diffusion ◽  
Hydrogen Atoms ◽  
Hydrogen Storage Properties ◽  
Storage Properties

Na2Ti3O7 NTs homogeneously distributed in MgH2 offer numerous diffusion channels to significantly accelerate the transportation of hydrogen atoms.

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

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7853
Author(s):  
Thi-Thu Le ◽  
Claudio Pistidda ◽  
Julián Puszkiel ◽  
María Victoria Castro Riglos ◽  
David Michael Dreistadt ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Hydrogenation Reaction ◽  
Kinetic Behavior ◽  
High Hydrogen ◽  
Hydrogen Storage Properties ◽  
Storage Performance ◽  
Dehydrogenation Kinetics ◽  
Hydrogen Storage Performance ◽  
Kinetics Of ◽  
Storage Properties

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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