Hydrogen desorption reactions of Li–N–H hydrogen storage system: Estimation of activation free energy

2007 ◽  
Vol 439 (1-2) ◽  
pp. 358-362 ◽  
Author(s):  
Mitsuru Matsumoto ◽  
Tetsuya Haga ◽  
Yasuaki Kawai ◽  
Yoshitsugu Kojima
Keyword(s):  
Free Energy ◽  
Hydrogen Storage ◽  
Storage System ◽  
Hydrogen Desorption ◽  
Activation Free Energy ◽  
Hydrogen Storage System

Hydrogen desorption mechanism of a Li–N–H hydrogen storage system

2010 ◽  
Vol 962 (1-3) ◽  
pp. 68-71 ◽  
Author(s):  
Min Hee Park ◽  
Hyungjun Kim ◽  
Jae Jung Urm ◽  
Jun Ho Lee ◽  
Young-Kyu Han ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Storage System ◽  
Hydrogen Desorption ◽  
Hydrogen Storage System ◽  
Desorption Mechanism

scholarly journals The Improvement in Hydrogen Storage Performance of MgH2 Enabled by Multilayer Ti3C2

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1190
Author(s):  
Zhaojie Wu ◽  
Jianhua Fang ◽  
Na Liu ◽  
Jiang Wu ◽  
Linglan Kong
Keyword(s):  
Hydrogen Storage ◽  
Hydrogen Absorption ◽  
Synergistic Effects ◽  
Hot Spot ◽  
Storage System ◽  
Single Layer ◽  
Hydrogen Desorption ◽  
Transition Metal Carbide ◽  
Hydrogen Storage System ◽  
Hydrogen Molecules

MgH2 has become a hot spot in the research of hydrogen storage materials, due to its high theoretical hydrogen storage capacity. However, the poor kinetics and thermodynamic properties of hydrogen absorption and desorption seriously hinder the development of this material. Ti-based materials can lead to good effects in terms of reducing the temperature of MgH2 in hydrogen absorption and desorption. MXene is a novel two-dimensional transition metal carbide or carbonitride similar in structure to graphene. Ti3C2 is one of the earliest and most widely used MXenes. Single-layer Ti3C2 can only exist in solution; in comparison, multilayer Ti3C2 (ML-Ti3C2) also exists as a solid powder. Thus, ML-Ti3C2 can be easily composited with MgH2. The MgH2+ML-Ti3C2 composite hydrogen storage system was successfully synthesized by ball milling. The experimental results show that the initial desorption temperature of MgH2-6 wt.% ML-Ti3C2 is reduced to 142 °C with a capacity of 6.56 wt.%. The Ea of hydrogen desorption in the MgH2-6 wt.% ML-Ti3C2 hydrogen storage system is approximately 99 kJ/mol, which is 35.3% lower than that of pristine MgH2. The enhancement of kinetics in hydrogen absorption and desorption by ML-Ti3C2 can be attributed to two synergistic effects: one is that Ti facilitates the easier dissociation or recombination of hydrogen molecules, while the other is that electron transfer generated by multivalent Ti promotes the easier conversion of hydrogen. These findings help to guide the hydrogen storage properties of metal hydrides doped with MXene.

Characteristic of a new Mg–Ni hydrogen storage system: Mg2−xNi1−yTixMny (0

2001 ◽  
Vol 322 (1-2) ◽  
pp. 246-248 ◽  
Author(s):  
Huan-tang Yuan ◽  
Rui Cao ◽  
Lian-bang Wang ◽  
Yi-jing Wang ◽  
Xue-ping Gao ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Storage System ◽  
Hydrogen Storage System

scholarly journals Investigation of Reaction Mechanism in Li2NH Hydrogen Storage System by TEM

2013 ◽  
Vol 77 (12) ◽  
pp. 571-574
Author(s):  
Shigehito Isobe ◽  
Miki Dohkoshi ◽  
Yongming Wang ◽  
Naoyuki Hashimoto ◽  
Somei Ohnuki ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Hydrogen Storage ◽  
Storage System ◽  
Hydrogen Storage System
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