Hydrogen storage in Ti–V-based body-centered-cubic phase alloys

2003 ◽  
Vol 18 (11) ◽  
pp. 2533-2536 ◽  
Author(s):  
Xuebin Yu ◽  
Zhu Wu ◽  
Baojia Xia ◽  
Taizhong Huang ◽  
Jinzhou Chen ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Cast Alloy ◽  
Absorption Capacity ◽  
Cubic Phase ◽  
Body Centered Cubic ◽  
Practical Application ◽  
Storage Performance ◽  
Single Body ◽  
Hydrogen Storage Performance ◽  
Effective Hydrogen

The hydrogen storage performance of a single body-centered-cubic phase Ti-40V-10Cr-10Mn alloy was investigated. A hydrogen absorption capacity of 4.2 wt.% (H/M = 2.1), which is the highest value at room temperature reported so far, was achieved at 293 K under modest pressure (3 MPa) for this as-cast alloy. The effective hydrogen capacities of this alloy were 2.6, 2.8, and 3.2 wt.%, respectively, at 353, 393, and 523 K, which gave hope of bringing Ti-V-based alloys into the reach of practical application for onboard hydrogen storage systems in fuel cell-powered vehicles.

scholarly journals Titanium Hydride Nanoplates Enable 5 wt% of Reversible Hydrogen Storage by Sodium Alanate below 80°C

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Zhuanghe Ren ◽  
Xin Zhang ◽  
Hai-Wen Li ◽  
Zhenguo Huang ◽  
Jianjiang Hu ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Practical Application ◽  
Metathesis Reaction ◽  
Hydrogen Capacity ◽  
Storage Performance ◽  
Sodium Alanate ◽  
Operation Temperature ◽  
Capacity Loss ◽  
Dehydrogenation Kinetics ◽  
Hydrogen Storage Performance

Sodium alanate (NaAlH4) with 5.6 wt% of hydrogen capacity suffers seriously from the sluggish kinetics for reversible hydrogen storage. Ti-based dopants such as TiCl4, TiCl3, TiF3, and TiO2 are prominent in enhancing the dehydrogenation kinetics and hence reducing the operation temperature. The tradeoff, however, is a considerable decrease of the reversible hydrogen capacity, which largely lowers the practical value of NaAlH4. Here, we successfully synthesized a new Ti-dopant, i.e., TiH2 as nanoplates with ~50 nm in lateral size and ~15 nm in thickness by an ultrasound-driven metathesis reaction between TiCl4 and LiH in THF with graphene as supports (denoted as NP-TiH2@G). Doping of 7 wt% NP-TiH2@G enables a full dehydrogenation of NaAlH4 at 80°C and rehydrogenation at 30°C under 100 atm H2 with a reversible hydrogen capacity of 5 wt%, superior to all literature results reported so far. This indicates that nanostructured TiH2 is much more effective than Ti-dopants in improving the hydrogen storage performance of NaAlH4. Our finding not only pushes the practical application of NaAlH4 forward greatly but also opens up new opportunities to tailor the kinetics with the minimal capacity loss.

scholarly journals Effect of Mischmetal Introduction on Hydrogen Storage Properties in Impure Hydrogen Gas of Ti-Fe-Mn-Co Alloys

Metals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1574
Author(s):  
Ruochen Shen ◽  
Chaohui Pu ◽  
Xiaoou Xu ◽  
Youpeng Xu ◽  
Zhilin Li ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Storage Capacity ◽  
Absorption Capacity ◽  
Hydrogen Gas ◽  
Hydrogen Storage Capacity ◽  
Hydrogen Storage Properties ◽  
Storage Performance ◽  
Hydrogen Storage Performance ◽  
Co Alloys ◽  
Storage Properties

The research aims to study the effect of adding mischmetal (Mm) to the TiFe0.86Mn0.07Co0.07 alloy on its hydrogen storage performance and cyclic stability. The results show that TiFe0.86Mn0.07Co0.07 + x% Mm (x = 0,4,6,8) alloys can be easily activated. The hydrogen absorption capacity of TiFe0.86Mn0.07Co0.07 + 4% Mm reaches 1.76 wt% (mass fraction) at 298 K. With the increase of Mm addition, the hydrogen storage capacity decreases slightly. Furthermore, after 40 absorption and desorption cycles in hydrogen containing 250 ppm O2, the alloy still has 36% of its initial hydrogen storage capacity, and the alloy can recover 93% of its hydrogen storage capacity through heat treatment.

scholarly journals Realizing Hydrogen De/Absorption Under Low Temperature for MgH2 by Doping Mn-Based Catalysts

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1745
Author(s):  
Ze Sun ◽  
Liuting Zhang ◽  
Nianhua Yan ◽  
Jiaguang Zheng ◽  
Ting Bian ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Room Temperature ◽  
Storage Systems ◽  
Hydrogenation Reaction ◽  
Future Application ◽  
Practical Application ◽  
Doping Amount ◽  
Storage Performance ◽  
Hydrogen Storage Performance ◽  
Mn Doped

Magnesium hydride (MgH2) has been considered as a potential material for storing hydrogen, but its practical application is still hindered by the kinetic and thermodynamic obstacles. Herein, Mn-based catalysts (MnCl2 and Mn) are adopted and doped into MgH2 to improve its hydrogen storage performance. The onset dehydrogenation temperatures of MnCl2 and submicron-Mn-doped MgH2 are reduced to 225 °C and 183 °C, while the un-doped MgH2 starts to release hydrogen at 315 °C. Further study reveals that 10 wt% of Mn is the better doping amount and the MgH2 + 10 wt% submicron-Mn composite can quickly release 6.6 wt% hydrogen in 8 min at 300 °C. For hydrogenation, the completely dehydrogenated composite starts to absorb hydrogen even at room temperature and almost 3.0 wt% H2 can be rehydrogenated in 30 min under 3 MPa hydrogen at 100 °C. Additionally, the activation energy of hydrogenation reaction for the modified MgH2 composite significantly decreases to 17.3 ± 0.4 kJ/mol, which is much lower than that of the primitive MgH2. Furthermore, the submicron-Mn-doped sample presents favorable cycling stability in 20 cycles, providing a good reference for designing and constructing efficient solid-state hydrogen storage systems for future application.

Hydrogen storage performance of methyl-substituted mesoporous silica with tailored textural characteristics

2021 ◽  
Author(s):  
Alfonso Policicchio ◽  
Ana-Maria Putz ◽  
Giuseppe Conte ◽  
Sara Stelitano ◽  
Carlo Poselle Bonaventura ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Hydrogen Storage ◽  
Textural Characteristics ◽  
Storage Performance ◽  
Hydrogen Storage Performance

Effect of N2, CH4 and O2 on hydrogen storage performance of 2LiNH2 + MgH2 system

2015 ◽  
Vol 40 (18) ◽  
pp. 6173-6179 ◽  
Author(s):  
Fei Sun ◽  
Min-yan Yan ◽  
Xiao-peng Liu ◽  
Jian-hua Ye ◽  
Zhi-nian Li ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Storage Performance ◽  
Hydrogen Storage Performance

Hydrogen storage performance in palladium-doped graphene/carbon composites

2013 ◽  
Vol 38 (9) ◽  
pp. 3681-3688 ◽  
Author(s):  
Chien-Hung Chen ◽  
Tsui-Yun Chung ◽  
Chin-Chang Shen ◽  
Ming-Sheng Yu ◽  
Cheng-Si Tsao ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Carbon Composites ◽  
Storage Performance ◽  
Doped Graphene ◽  
Hydrogen Storage Performance

nA DFT study on the outstanding hydrogen storage performance of the Ti-decorated MoS2 monolayer

2021 ◽  
pp. 101329
Author(s):  
Shulin Yang ◽  
Xueting Wang ◽  
Gu Lei ◽  
Huoxi Xu ◽  
Zhao Wang ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Dft Study ◽  
Storage Performance ◽  
Mos2 Monolayer ◽  
Hydrogen Storage Performance
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