Effect of carbon allotropes on the structure and hydrogen sorption during reactive ball-milling of Mg–C powder mixtures

Rud, A. D.; Lakhnik, A.M.

doi:10.1016/j.ijhydene.2011.11.123

Cited by 48 publications

(17 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Currently, the widely studied carbon materials that are part of the magnesium-carbon composites include graphite, carbon nanotubes, carbon, graphene, activated carbon, microlitic carbon, etc. [140][141][142][143][144][145][146][147][148].…”

Section: Carbon Additivesmentioning

confidence: 99%

Using Ball Milling for Modification of the Hydrogenation/Dehydrogenation Process in Magnesium-Based Hydrogen Storage Materials: An Overview

Lyu

Лидер

Kudiiarov

2019

Metals

View full text Add to dashboard Cite

Magnesium-based hydrogen storage materials are considered to be one of the most promising solid-state hydrogen storage materials due to their large hydrogen storage capacity and low cost. However, slow hydrogen absorption/desorption rate and excessive hydrogen absorption/desorption temperature limit the application of magnesium-based hydrogen storage materials. The present paper reviews recent progress in improving the hydrogen storage properties by element substitution and additives. Ball milling is the promising technology for preparing magnesium-based hydrogen storage materials. The research and development of approaches for modifying magnesium-based hydrogen storage materials prepared by ball milling is systematically expounded. It is concluded that ball milling can significantly improve the kinetic and electrochemical properties of magnesium-based hydrogen storage materials and increase the hydrogen storage capacity. In the future, the research of magnesium-based hydrogen storage materials should be developed in terms of hydrogen storage mechanism, computer design of materials and development of a more optimized catalytic system.

show abstract

Section: Carbon Additivesmentioning

confidence: 99%

Using Ball Milling for Modification of the Hydrogenation/Dehydrogenation Process in Magnesium-Based Hydrogen Storage Materials: An Overview

Lyu

Лидер

Kudiiarov

2019

Metals

View full text Add to dashboard Cite

show abstract

“…Additionally, shortening of the hydrogenation time is due to formation of a carbon coating layer between particles during ball milling. The carbon coating layer prevents particle agglomeration and restoration of the oxide layer on the fresh cracked surface 4) . Fro 1h absorption times, it can be clearly seen that the hydriding rate of MgH x -graphene at all temperatures increased with the rise in graphene content.…”

Section: Hydrogen Absorption Kineticsmentioning

confidence: 99%

“…The main reasons for the slow hydrogen sorption kinetics are an oxide layer on the magnesium surface and blocked hydrogen diffusion 4) . In order to improve hydrogen sorption/desorption kinetics, ball milling is most widely used.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Hydrogen Properties on Mg₂NiH_x-Graphene Composites by Mechanical Alloying

Lee¹,

Lee²,

Lee³

et al. 2014

Transactions of the Korean hydrogen and new energy society

View full text Add to dashboard Cite

>> Mg hydride has a high hydrogen capacity (7.6%), at high temperature, and is a lightweight and low cost material, thus it a promising hydrogen storage material. However, its high operation temperature and very slow reaction kinetics are obstacles to practical application. In order to overcome these disadvantages of Mg hydride, graphene powder was added to it. The addition of graphene has been shown to reduce the operating temperature of dehydrogenation. Moreover, in this report the environmental aspects of MgHx-Graphene composites are investigated by means of the environmental life cycle assessment (LCA) method. MgHx-Graphene mixture was prepared by hydrogen induced mechanical alloy (HIMA). The synthesized powder was characterized by XRD(X-ray Diffraction). The hydrogenation behaviors were evaluated by using a Sievert's type automatic PCT apparatus. Such evaluation of Materials also conducted in the LCA. From the result of P-C-T(Pressure-Composition-Temperature) curves, the MgHx-3wt.% graphene composite was evaluated as having a 5.86wt.% maximum hydrogen storage capacity, at 523K. From absorption kinetic testing, the MgHx-7wt.%graphene composite was evaluated as having a maximum 6.94wt.%/ms hydrogen absorption rate, at 573K. Environment evaluation results for the MgHx-graphene composites and other materials indicated environmental impact from the electric power used and from the materials themselves.

show abstract

“…Kadri et al demonstrated that the presence of both a V-based catalyst and carbon nanotubes reduces the enthalpy and entropy of MgH 2 , and partially destroyed CNTs are better at enhancing the hydrogen sorption performance [27]. Other forms of carbon, such as amorphous carbon [28,29], carbon black [28,30], activated carbons [31,32], and carbon nanotubes [28,[33][34][35][36][37][38][39], have also been studied for their catalytic effect on the magnesium hydrogen system. NaMgH 3 can be synthesized via reactive mechanochemical means.…”

Section: Introductionmentioning

confidence: 99%

The Improvement of Dehydriding the Kinetics of NaMgH3 Hydride via Doping with Carbon Nanomaterials

Wang

Song

et al. 2016

Metals

View full text Add to dashboard Cite

NaMgH 3 perovskite hydride and NaMgH 3 -carbon nanomaterials (NH-CM) composites were prepared via the reactive ball-milling method. To investigate the catalytic effect of CM on the dehydriding kinetic properties of NaMgH 3 hydride, multiwall carbon nanotubes (MWCNTs) and graphene oxide (GO) were used as catalytic additives. It was found that dehydriding temperatures and activation energies (∆E 1 and ∆E 2 ) for two dehydrogenation steps of NaMgH 3 hydride can be greatly reduced with a 5 wt. % CM addition. The NH-2.5M-2.5G composite presents better dehydriding kinetics, a lower dehydriding temperature, and a higher hydrogen-desorbed amount (3.64 wt. %, 638 K). ∆E 1 and ∆E 2 can be reduced by about 67 kJ/mol and 30 kJ/mol, respectively. The results suggest that the combination of MWCNTs and GO is a better catalyst as compared to MWCNTs or GO alone.

show abstract

Effect of carbon allotropes on the structure and hydrogen sorption during reactive ball-milling of Mg–C powder mixtures

Cited by 48 publications

References 38 publications

Using Ball Milling for Modification of the Hydrogenation/Dehydrogenation Process in Magnesium-Based Hydrogen Storage Materials: An Overview

Using Ball Milling for Modification of the Hydrogenation/Dehydrogenation Process in Magnesium-Based Hydrogen Storage Materials: An Overview

Evaluation of Hydrogen Properties on Mg₂NiH_x-Graphene Composites by Mechanical Alloying

The Improvement of Dehydriding the Kinetics of NaMgH3 Hydride via Doping with Carbon Nanomaterials

Contact Info

Product

Resources

About

Effect of carbon allotropes on the structure and hydrogen sorption during reactive ball-milling of Mg–C powder mixtures

Cited by 48 publications

References 38 publications

Using Ball Milling for Modification of the Hydrogenation/Dehydrogenation Process in Magnesium-Based Hydrogen Storage Materials: An Overview

Using Ball Milling for Modification of the Hydrogenation/Dehydrogenation Process in Magnesium-Based Hydrogen Storage Materials: An Overview

Evaluation of Hydrogen Properties on Mg2NiHx-Graphene Composites by Mechanical Alloying

The Improvement of Dehydriding the Kinetics of NaMgH3 Hydride via Doping with Carbon Nanomaterials

Contact Info

Product

Resources

About

Evaluation of Hydrogen Properties on Mg₂NiH_x-Graphene Composites by Mechanical Alloying