Pd nanoparticles with tunable diameter deposited on carbon nanotubes with enhanced hydrogen storage capacity

Energy ◽  
2014 ◽  
Vol 75 ◽  
pp. 549-554 ◽  
Author(s):  
Karolina Wenelska ◽  
Beata Michalkiewicz ◽  
Xuecheng Chen ◽  
Ewa Mijowska
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Storage ◽  
Storage Capacity ◽  
Pd Nanoparticles ◽  
Hydrogen Storage Capacity

Study on Electrochemical Hydrogen Storage of Multi-Walled Carbon Nanotubes

2007 ◽  
Vol 26-28 ◽  
pp. 831-834 ◽  
Author(s):  
Lei Xie ◽  
Xiao Qi Li
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Storage ◽  
Storage Capacity ◽  
Weight Percent ◽  
Chemical Form ◽  
Hydrogen Storage Capacity ◽  
Electrochemical Hydrogen Storage ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Discharging Capacity

The electrode(Ni-MWNTs) containing nickel(Ni) and multi-walled carbon nanotubes (MWNTs) was prepared by composite electrodeposit. Electrochemical hydrogen storage of the electrode was studied. The result showed a high electrochemical discharging capacity of up to 1361.1mA·h·g-1, which corresponds to a hydrogen storage capacity of 4.77Wt%(weight percent). Test of cyclic lifespan showed MWNTs had certain cyclic lifespan. Cyclic voltammetry tests showed that MWNTs can store hydrogen in chemical form.

Pressure Isotherms of Hydrogen Adsorption in Carbon Nanostructures

2001 ◽  
Vol 706 ◽  
Author(s):  
Xiaohong Chen ◽  
Urszula Dettlaff-Weglikowska ◽  
Miroslav Haluska ◽  
Martin Hulman ◽  
Siegmar Roth ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Hydrogen Storage ◽  
Carbon Nanostructures ◽  
Room Temperature ◽  
Storage Capacity ◽  
Hydrogen Adsorption ◽  
Single Wall Carbon Nanotubes ◽  
Hydrogen Storage Capacity ◽  
Carbon And Graphite

AbstractThe hydrogen adsorption capacity of various carbon nanostructures including single-wall carbon nanotubes, graphitic nanofibers, activated carbon, and graphite has been measured as a function of pressure and temperature. Our results show that at room temperature and a pressure of 80 bar the hydrogen storage capacity is less than 1 wt.% for all samples. Upon cooling, the capacity of hydrogen adsorption increases with decreasing temperature and the highest value was observed to be 2.9 wt. % at 50 bar and 77 K. The correlation between hydrogen storage capacity and specific surface area is discussed.

THE NET ADSORPTION OF HYDROGEN ON PALLADIUM NANOPARTICLES

2014 ◽  
Vol 21 (02) ◽  
pp. 1450022 ◽  
Author(s):  
DEBJYOTI SAHU ◽  
PRASHANT MISHRA ◽  
NITUN DAS ◽  
ANIL VERMA ◽  
SASIDHAR GUMMA
Keyword(s):  
Ethylene Glycol ◽  
Hydrogen Storage ◽  
Palladium Nanoparticles ◽  
Pressure Range ◽  
Storage Capacity ◽  
Hydrogen Adsorption ◽  
Pd Nanoparticles ◽  
Hydrogen Storage Capacity ◽  
Pd Nanoparticle ◽  
Gravimetric Adsorption

In this paper, we report the synthesis of polymer coated palladium ( Pd ) nanoparticles through a single stage reduction of Pd 2+ ions by ethylene glycol. Polyvinyl pyrrolidone (PVP, MW 25,000) is used as a stabilizer. Self-assembled Pd nanoparticles (10–40 nm) were used in hydrogen adsorption studies. Gravimetric adsorption measurements were carried out in a pressure range of 0–26 bar at 293, 324, 364 and 392 K. Saturation for all isotherms was obtained within a few bars of pressure at all temperatures. Maximum hydrogen storage capacity observed was 0.58 wt.% at 324 K and 20 bar. Net adsorption calculations indicated that required tank volume (for storing a particular amount of hydrogen) can be significantly reduced by using a tank filled with Pd nanoparticle.

COMPUTATION OF INTERACTION POTENTIAL OF ADSORBATES ON ZIGZAG SWCNTs — APPLICATION TO FUNCTIONALIZATION AND HYDROGEN STORAGE

2011 ◽  
Vol 10 (03) ◽  
pp. 391-396 ◽  
Author(s):  
I. LAKSHMI ◽  
D. SILAMBARASAN ◽  
V. J. SURYA ◽  
M. RAJARAJESWARI ◽  
K. IYAKUTTI ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Storage ◽  
Interaction Potential ◽  
Potential Model ◽  
Storage Capacity ◽  
Computation Time ◽  
Single Walled Carbon Nanotubes ◽  
Initial Guess ◽  
Hydrogen Storage Capacity ◽  
Walled Carbon Nanotubes

Nature of the interaction potential of different adsorbates on different zigzag single-walled carbon nanotubes is investigated. The intermolecular potentials for H2 absorbed in carbon nanotubes (5, 0), (6, 0), (7, 0), (8, 0), (9, 0), and (10, 0) are computed and sketched. This study is extended to N2 adsorbed on (4, 0) and BH3 adsorbed on (10, 0) tubes. The equilibrium positions of the adsorbates obtained from the potential model serve as an initial guess in designing the CNT + adsorbate complex in the simulation cell and this process considerably reduces the computation time. Further, the hydrogen storage capacity of CNT(10,0) + BH3 complex is calculated. The estimated storage capacity of this system is in the range 6–12 wt.%.

Enhancing the hydrogen storage capacity of Pd-functionalized multi-walled carbon nanotubes

2012 ◽  
Vol 258 (8) ◽  
pp. 3405-3409 ◽  
Author(s):  
Priyanka Singh ◽  
Mukta V. Kulkarni ◽  
Suresh P. Gokhale ◽  
Samir H. Chikkali ◽  
Chandrashekhar V. Kulkarni
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Storage ◽  
Storage Capacity ◽  
Hydrogen Storage Capacity ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes
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