Hydrogen storage capacity of different carbon nanostructures in ambient conditions

2005 ◽  
Vol 98 (7) ◽  
pp. 074316 ◽  
Author(s):  
Jae Won Jang ◽  
Cheol Eui Lee ◽  
Chan Ick Oh ◽  
Cheol Jin Lee
Keyword(s):  
Hydrogen Storage ◽  
Carbon Nanostructures ◽  
Storage Capacity ◽  
Ambient Conditions ◽  
Hydrogen Storage Capacity

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.

First-Principles Study on the Hydrogen Storage of Sandwich-Type Dimetallocenes

2013 ◽  
Vol 677 ◽  
pp. 149-152
Author(s):  
Bo An ◽  
Hai Yan Zhu
Keyword(s):  
Hydrogen Storage ◽  
First Principles ◽  
Storage Capacity ◽  
High Capacity ◽  
First Principles Calculation ◽  
Hydrogen Storage Materials ◽  
Ambient Conditions ◽  
Hydrogen Storage Capacity ◽  
Hydrogen Molecules ◽  
Sandwich Type

The paper mainly focuses on the ability of absorbing hydrogen molecule of the dimetallocene (C5H5)2TM2(TM=Ti/Zn/Cu/Ni) based on the first-principles calculation. The result indicates that these compounds can adsorb up to eight hydrogen molecules, the binding energy is 0.596eV/H2 for Cp2Ti2, 0.802eV/H2 for Cp2Zn2, 0.422eV/H2 for Cp2Cu2 and 0.182eV/H2 for Cp2Ni2 respectively. The corresponding gravimetric hydrogen-storage capacity is 7.1wt% for Cp2Ti2, 6.2wt% for Cp2Zn2, 6.3wt% for Cp2Cu2 and 6.5wt% for Cp2Ni2 respectively. These sandwich-type organometallocenes proposed in this work are favorable for reversible adsorption and desorption of hydrogen under ambient conditions. These predictions will likely provide a new route for developing novel high-capacity hydrogen-storage materials.

Hydrogen Storage Investigation of Fixed Bed of Nanocrystalline Mg-Ni-Cr Mixed Oxides

2013 ◽  
Vol 701 ◽  
pp. 179-183
Author(s):  
M. Abdus Salam ◽  
Suriati Sufian ◽  
Thanabalan Murugesan
Keyword(s):  
Hydrogen Storage ◽  
Storage Capacity ◽  
Mixed Oxides ◽  
Fixed Bed ◽  
Hydrogen Storage Material ◽  
Ambient Conditions ◽  
Storage Material ◽  
Hydrogen Storage Capacity ◽  
Adsorption Enthalpy ◽  
Icp Ms

nanocrystalline mixed oxides containing magnesium, nickel and chromium (MNCM) have been synthesized as an adsorbent using coprecipitation method and showed its reversible hydrogen storage capacity at ambient conditions using fixed bed. XRD and ICP-MS analyses ensured the adsorbents phase and homogeneity. The microstructure of mixed oxide has been investigated using FESEM and BET and TEM technique respectively. The adsorbent consisted of mesoporous surface with a surface area of 254-370 m2gm-1and SAED pattern showed that the adsorbents are poly-crystalline. The mixed oxides exhibited a 3.2 wt% H2storage capacity and release 57% of adsorbed H2. Adsorption enthalpy (H) and entropy (S) change of-27.58 kJ/mol and-70.21 J/mol.K are indicating favorable thermodynamics for reversible hydrogen storage material.

Theoretical evaluation of hydrogen storage capacity in pure carbon nanostructures

2003 ◽  
Vol 119 (4) ◽  
pp. 2376-2385 ◽  
Author(s):  
Ju Li ◽  
Terumi Furuta ◽  
Hajime Goto ◽  
Toshiyuki Ohashi ◽  
Yoshiya Fujiwara ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Carbon Nanostructures ◽  
Storage Capacity ◽  
Hydrogen Storage Capacity ◽  
Theoretical Evaluation ◽  
Pure Carbon

Catalyzed KSiH3as a reversible hydrogen storage material

2016 ◽  
Vol 4 (48) ◽  
pp. 19045-19052 ◽  
Author(s):  
R. Janot ◽  
W. S. Tang ◽  
D. Clémençon ◽  
J.-N. Chotard
Keyword(s):  
Solid State ◽  
Hydrogen Storage ◽  
Storage Capacity ◽  
Hydrogen Storage Material ◽  
Ambient Conditions ◽  
Storage Material ◽  
Hydrogen Storage Capacity ◽  
Hydrogen Storage Kinetics ◽  
Reversible Formation ◽  
Kinetics Of

Solid-state hydrogen storage through the reversible formation of metallic hydrides is a key issue for the development of hydrogen as an energy vector. Here the hydrogen storage kinetics of the reaction between KSi and KSiH3have been strongly enhanced by catalyst addition. The reaction is perfectly reversible near ambient conditions with a 4.1 wt% hydrogen storage capacity.

Graphene crumpling as a method of hydrogen storage: Simulation results

2019 ◽  
Vol 04 (04) ◽  
pp. 1950009
Author(s):  
Julia A. Baimova ◽  
Karina A. Krylova ◽  
Ivan P. Lobzenko
Keyword(s):  
Binding Energy ◽  
Hydrogen Storage ◽  
Carbon Nanostructures ◽  
Storage Capacity ◽  
Dynamics Simulation ◽  
First Principle ◽  
Hydrogen Binding ◽  
Hydrogen Storage Capacity ◽  
Simulation Techniques ◽  
Crumpled Graphene

Various carbon nanostructures, including graphene, are very promising for application in hydrogen storage. One of the promising ways to increase the hydrogen storage capacity of graphene is crumpling. In this work, an increase of hydrogen binding energy to graphene with ripple is studied by first-principle calculations. It is shown that binding energy can be considerably increased for hydrogen atom attached outside the cavity of graphene ripple. Further, by molecular dynamics simulation, it is shown that physisorption of hydrogen in the cavities of crumpled graphene is also very promising if hydrostatic compression is applied to the structure. The volumetric density of hydrogen storage can be increased for 14% for the compressed crumpled graphene in comparison with undeformed structure. Results obtained by two simulation techniques showed that crumpled graphene can be considered as a very promising media for hydrogen storage both by chemisorption and physisorption.

Thermodynamical model for hydrogen storage capacity in carbon nanostructures

2015 ◽  
Vol 40 (11) ◽  
pp. 4184-4193 ◽  
Author(s):  
A.V. Avdeenkov ◽  
I.V. Bodrenko ◽  
D.G. Bessarabov ◽  
A.V. Bibikov ◽  
A.V. Nikolaev ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Carbon Nanostructures ◽  
Storage Capacity ◽  
Hydrogen Storage Capacity ◽  
Thermodynamical Model

Hydrogen Storage Using Carbon Nanostructures

2015 ◽  
Author(s):  
Sheriden Smith ◽  
Young Ho Park
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Storage ◽  
Carbon Nanostructures ◽  
Storage Capacity ◽  
Molecular Level ◽  
Hydrogen Storage Capacity ◽  
Atom Ratio ◽  
Adsorption Mechanisms ◽  
Hydrogen Density ◽  
Atomic Simulations

Carbon nanostructures were reported to be very promising materials for hydrogen storage, and a great deal of interest has been focused on adsorption of molecular hydrogen in carbon nanostructures. Although many experimental results for hydrogen storage in carbon nanostructures were reported, corresponding theoretical studies have not been developed and adsorption mechanisms have not been fully identified. Better understanding of molecular level phenomena provides clues to designing hydrogen storage that performs better. Atomic simulations are useful in the evaluation of hydrogen storage capacity of carbon nanotubes. In this paper, molecular simulations of hydrogen physisorption in carbon nanotubes were conducted. Hydrogen density distribution near carbon nanotubes was studied, and hydrogen storage capability is determined by computing hydrogen to carbon atom ratio. The peak hydrogen concentration around the nanostructures was simulated to be located relatively consistently around 3 angstroms away from each nanostructure.

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