Hydrogen Storage Properties of FCC Type Mg-Transition Metal Hydrides Prepared by GPa High Pressure Method

2007 ◽  
Vol 561-565 ◽  
pp. 1577-1580 ◽  
Author(s):  
Tomoaki Takasaki ◽  
Daisuke Kyoi ◽  
Naoyuki Kitamura ◽  
Shigeo Tanase ◽  
Tetsuo Sakai
Keyword(s):  
High Pressure ◽  
Metal Hydrides ◽  
Hydrogen Atmosphere ◽  
Face Centered Cubic ◽  
Hydrogen Storage Properties ◽  
Pressure Method ◽  
Transition Metal Hydrides ◽  
Dsc Measurements ◽  
Face Centered ◽  
Storage Properties

Hydrogenation / dehydrogenation properties of a series of ternary face centered cubic (FCC) hydrides “Mg7MHx” (M = Sc, Ti, V, Zr, Nb, Hf and Ta), which were prepared by a high-pressure technique, were investigated. Differential scanning calorimeter (DSC) measurements under hydrogen atmosphere revealed that these hydrides exhibited reversible hydrogen releasing and re-storing properties at around 600 and 560 K, respectively. These releasing temperatures are lower by 100 ~ 120 K than that of MgH2. Furthermore, pressure-composition isotherm at 523 K shows that these FCC hydrides release 3.8 - 5 wt. % hydrogens.

scholarly journals Understanding of Hydrogen Storage Properties of Metal Hydrides Based on Structural Analysis

Materia Japan ◽  
2013 ◽  
Vol 52 (7) ◽  
pp. 328-332
Author(s):  
Yumiko Nakamura ◽  
Kouji Sakaki ◽  
Kohta Asano ◽  
Hyunjeong Kim ◽  
Itoko Matsumoto ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Hydrogen Storage ◽  
Metal Hydrides ◽  
Hydrogen Storage Properties ◽  
Storage Properties

Effect of initial powder type on the hydrogen storage properties of high-pressure torsion consolidated Mg

2017 ◽  
Vol 42 (35) ◽  
pp. 22438-22448 ◽  
Author(s):  
Subrata Panda ◽  
Jean-Jacques Fundenberger ◽  
Yajun Zhao ◽  
Jianxin Zou ◽  
Laszlo S. Toth ◽  
...  
Keyword(s):  
High Pressure ◽  
Hydrogen Storage ◽  
High Pressure Torsion ◽  
Initial Powder ◽  
Hydrogen Storage Properties ◽  
Powder Type ◽  
Storage Properties

Hydrogen storage properties of vanadium-based b.c.c. solid solution metal hydrides

2003 ◽  
Vol 348 (1-2) ◽  
pp. 252-257 ◽  
Author(s):  
Chan-Yeol Seo ◽  
Jin-Ho Kim ◽  
Paul S Lee ◽  
Jai-Young Lee
Keyword(s):  
Solid Solution ◽  
Hydrogen Storage ◽  
Metal Hydrides ◽  
Hydrogen Storage Properties ◽  
Storage Properties

High‐pressure hydrogen storage properties of Ti x Cr 1 − y Fe y Mn 1.0 alloys

2019 ◽  
Vol 43 (11) ◽  
pp. 5759-5774 ◽  
Author(s):  
Jigang Li ◽  
Xiaojing Jiang ◽  
Zhinian Li ◽  
Lijun Jiang ◽  
Xingguo Li
Keyword(s):  
High Pressure ◽  
Hydrogen Storage ◽  
Hydrogen Storage Properties ◽  
Storage Properties ◽  
Pressure Hydrogen

MOLECULAR DYNAMICS SIMULATIONS OF STRUCTURAL PROPERTIES OF CuNi ALLOYS DURING THE COOLING PROCESS AT HIGH PRESSURE

2020 ◽  
Vol 65 (10) ◽  
pp. 10-17
Author(s):  
Thao Nguyen Thi ◽  
Giang Bui Thi Ha ◽  
Linh Tran Phan Thuy ◽  
Hop Nguyen Van ◽  
Chung Pham Do ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
High Pressure ◽  
Molecular Dynamics Simulations ◽  
Sudden Change ◽  
Face Centered Cubic ◽  
Cooling Process ◽  
Embedded Atom ◽  
The Face ◽  
Face Centered ◽  
Dynamics Simulations

Molecular dynamics simulations of Cu80Ni20 (Cu:Ni = 8:2) model with the size of 8788 atoms have been carried out to study the structure and mechanical behavior at high pressure of 45 GPa. The interactions between atoms of the system were calculated by the Quantum Sutton-Chen embedded-atom potentials. The crystallization has occurred during the cooling process with a cooling rate of 0.01 K\ps. The temperature range of the phase transition is determined based on the sudden change of atomic potential during the cooling process. There is also a sudden change in the number of individual atoms in the sample. At a temperature of 300 K, both Ni and Cu atoms are crystallized into the face-centered cubic (FCC) and the hexagonal close-packed (HCP) phases, respectively. The mechanical characteristics of the sample at 300 K were also analyzed in detail through the determination of elastic modulus, number of atoms, and void distribution during the tensile process.

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