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.

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.

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.

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.

Nitrogen doped porous carbon derived from EDTA: Effect of pores on hydrogen storage properties

2018 ◽  
Vol 43 (17) ◽  
pp. 8385-8394 ◽  
Author(s):  
Tapas K. Das ◽  
Seemita Banerjee ◽  
P. Sharma ◽  
V. Sudarsan ◽  
P.U. Sastry
Keyword(s):  
Hydrogen Storage ◽  
Porous Carbon ◽  
Hydrogen Storage Properties ◽  
Nitrogen Doped ◽  
Storage Properties

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

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.

scholarly journals Li–fluorine codoped electrospun carbon nanofibers for enhanced hydrogen storage

RSC Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 4053-4061
Author(s):  
Xiaohong Chen ◽  
Zhiyong Xue ◽  
Kai Niu ◽  
Xundao Liu ◽  
Wei lv ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Carbon Nanofibers ◽  
Porous Carbon ◽  
Carbon Nanofiber ◽  
Storage Performance ◽  
Porous Carbon Nanofiber ◽  
Hydrogen Storage Performance

We developed a facile, yet general, approach for preparing Li–fluorine codoped porous carbon nanofiber (Li–F–PCNF) composites, which showed excellent hydrogen storage performance.

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.

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