Surface structural alteration of multi-walled carbon nanotubes decorated by nickel nanoparticles based on laser ablation/chemical reduction methods to enhance hydrogen storage properties

2019 ◽  
Vol 44 (7) ◽  
pp. 3812-3823 ◽  
Author(s):  
M. Mehrabi ◽  
A. Reyhani ◽  
P. Parvin ◽  
S.Z. Mortazavi
Keyword(s):  
Carbon Nanotubes ◽  
Laser Ablation ◽  
Hydrogen Storage ◽  
Nickel Nanoparticles ◽  
Chemical Reduction ◽  
Hydrogen Storage Properties ◽  
Reduction Methods ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
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.

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