A novel kind of copper–active carbon nanocomposites with their high hydrogen storage capacities at room temperature

2007 ◽  
Vol 32 (12) ◽  
pp. 1943-1948 ◽  
Author(s):  
Juan Hu ◽  
Qiuming Gao ◽  
Yihua Wu ◽  
Shuqing Song
Keyword(s):  
Hydrogen Storage ◽  
Active Carbon ◽  
Room Temperature ◽  
High Hydrogen ◽  
Carbon Nanocomposites

Similarity of Deuterium Absorption at Room Temperature for Different Ti-Zr-Ni Quasicrystals

2010 ◽  
Vol 150-151 ◽  
pp. 88-91
Author(s):  
Huo Gen Huang ◽  
Rong Li ◽  
Liang Chen
Keyword(s):  
Solid Solution ◽  
Hydrogen Storage ◽  
Experimental Evidence ◽  
Room Temperature ◽  
Hydrogen Storage Materials ◽  
High Hydrogen ◽  
Solution State ◽  
Phase Structures ◽  
Deuterium Concentration ◽  
Icosahedral Quasicrystals

Ti-Zr-Ni icosahedral quasicrystals (IQCs) have been regarding as potential hydrogen storage materials due to their high hydrogen ability. Nevertheless, their hydrogen capacities are largely different as reported by different researchers, which is toughly understood.We investigated in this paper deuterium absorption at room temperature for quasicrystalline alloys Ti45Zr38Ni17, Ti41.5Zr41.5Ni17, Ti40Zr40Ni20 with corresponding phase structures of IQC+β(Ti,Zr), IQC+C14(TiZrNi), IQC. The results indicated the same solid solution state for the deuterium in these alloys, whose deuterium concentration was 12~13mmol/g. Given that all these alloys are in a single IQC phase, we believe very similar deuterium capacities for them, which surely needs more strict experimental evidence.

Hydrogen Storage in Nitrides by the Use of Ammonia as a Hydrogen Carrier

2010 ◽  
Vol 654-656 ◽  
pp. 2819-2822
Author(s):  
Hayao Imamura ◽  
Naotaka Shimomura ◽  
Keisuke Watanabe ◽  
Kenichi Tanaka ◽  
Fumiya Nakamura ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Hydrogen Storage ◽  
Active Carbon ◽  
Room Temperature ◽  
Ammonia Gas ◽  
Hydrogen Carrier ◽  
Magnesium Nitride

Hydrogen storage by calcium nitride or magnesium nitride has been undertaken by the use of ammonia, in which the possibility of ammonia as a vector for hydrogen carriers has been studied. When the calcium imide ornitride obtained by thermal decomposition of calcium amide dispersed on active carbon (AC) was brought into contact with ammonia gas (300 Torr) at room temperature, NH3 uptake readily occurred. When the sample after NH3 uptake was heated, the absorbed ammonia was released in the form of hydrogen and nitrogen. The ammonia is possibly absorbed in the form of the decomposed state in the imide ornitride. This type of hydrogen storage has been extensively studied and characterized.For magnesium nitride, ammonia was absorbed and desorbed without the decomposition.

Electrochemical Hydriding of Mg-Based Alloys

2011 ◽  
Vol 312-315 ◽  
pp. 882-887
Author(s):  
Dalibor Vojtěch ◽  
Vítězslav Knotek ◽  
Pavel Novák
Keyword(s):  
Hydrogen Storage ◽  
High Temperatures ◽  
Room Temperature ◽  
Hydrogen Atmosphere ◽  
The Other ◽  
High Hydrogen ◽  
Hydrogen Saturation ◽  
Other Hand ◽  
Mechanism And Kinetics ◽  
Storage Methods

Mg-based alloys are prospective materials for reversible hydrogen storage in the form of metallic hydrides. Usually, hydrogen saturation is carried out at high temperatures and high hydrogen pressures. This is the reason for the high cost of metallic hydrides in comparison with other hydrogen storage methods. Electrochemical hydriding, on the other hand, can be realized at room temperature. Moreover, this process does not need any hydrogen atmosphere. In the presented work, electrochemical hydriding of several Mg-Ni-Mm-based alloys (Mm = mishmetal) is performed. Hydriding efficiency, mechanism and kinetics are described. It is shown that the additions of Ni, Mm and the formation of eutectic structures support hydriding of alloys.

Easy synthesis of highly nitrogen-enriched graphitic carbon with a high hydrogen storage capacity at room temperature

Carbon ◽  
2009 ◽  
Vol 47 (6) ◽  
pp. 1585-1591 ◽  
Author(s):  
Seung Jae Yang ◽  
Jung Hyun Cho ◽  
Gyu Hwan Oh ◽  
Kee Suk Nahm ◽  
Chong Rae Park
Keyword(s):  
Hydrogen Storage ◽  
Room Temperature ◽  
Storage Capacity ◽  
Graphitic Carbon ◽  
Hydrogen Storage Capacity ◽  
High Hydrogen

Study of hydrogen storage by carbonaceous material at room temperature

2007 ◽  
Vol 16 (8) ◽  
pp. 1517-1523 ◽  
Author(s):  
Nor Hasridah Abu Hassan ◽  
Abdul Rahman Mohamed ◽  
Sharif Hussein Sharif Zein
Keyword(s):  
Hydrogen Storage ◽  
Room Temperature ◽  
Carbonaceous Material

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.

scholarly journals Metal hydride hydrogen storage and purification technologies

2021 ◽  
Vol 2039 (1) ◽  
pp. 012005
Author(s):  
D V Blinov ◽  
V I Borzenko ◽  
A V Bezdudny ◽  
A N Kazakov
Keyword(s):  
Hydrogen Storage ◽  
Metal Hydride ◽  
High Volume ◽  
Recovery Rates ◽  
High Hydrogen ◽  
Hydrogen Recovery ◽  
Hydride Hydrogen ◽  
Flow Through

Abstract The results of the development of metal hydride (MH) reactors for the storage and purification of hydrogen of various types are presented. Two methods of metal hydride purification of hydrogen are presented. The use of the MH method of flow-through purification of hydrogen has high hydrogen recovery rates at high volume contents of hydrogen in the mixture (⩾10% vol.), while the method of periodic evacuation of accumulated impurities is most effective at low hydrogen contents in the mixture (<10% vol.).

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