Hydrogenation of a TiFe-based alloy at high pressures and temperatures

Endo, Naruki; Saita, Itoko; Nakamura, Yumiko; Saitoh, Hiroyuki; Machida, Akihiko

doi:10.1016/j.ijhydene.2015.01.015

Cited by 18 publications

(8 citation statements)

References 18 publications

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“…Moreover, the system should be heated above 373 K if one wants a hydrogen desorption plateau pressure as high as 20 MPa . The disadvantages of AB‐type alloys (eg, TiFe) are the activation for hydrogen absorption is difficult and the hydrogen desorption plateau pressure ( P d ) is not high enough . AB 2 ‐type alloys include Zr‐based (ZrCr 2 , ZrFe 2 , ZrMn 2 , ZrV 2 ), Ti‐based (Ti‐Cr and Ti‐Mn based), and RE‐based (RE: Rare earth metal) alloys.…”

Section: Introductionmentioning

confidence: 99%

High‐pressure hydrogen storage properties of Ti _x Cr _1 − y Fe _y Mn _1.0 alloys

Jiang

et al. 2019

Int J Energy Res

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Summary TixCr1 − yFeyMn1.0 (x = 1.02, 1.05, 1.1, 0.05 ≤ y ≤ 0.25) alloys were prepared by plasma arc melting and annealing at 1273 K for 2 hours. The XRD results show that the main phase of all alloys is the C14 type Laves phase, and a little secondary phase exists in a mixture of the binary alloy phase. The lattice parameters increase with Ti super‐stoichiometry ratio increasing, whereas smaller lattice parameters emerge with increasing Fe stoichiometry content. Additionally, as the Ti super‐stoichiometry ratio decreases, the pressure‐composition‐temperature measurements indicated that hydrogen absorption and desorption plateau pressures of TixCr0.9Fe0.1Mn1.0 (x = 1.1, 1.05, 1.02) alloys increase from 3.15, 0.67, to 5.94, 1.13 MPa at 233 K, respectively. On the other hand, with the Fe content increasing in Ti1.05Cr1 − yFeyMn1.0 (0.1 ≤ y ≤ 0.25) alloys from 0.1 to 0.25, the hydrogen desorption plateau pressures increased from 1.41 to 2.46 MPa at 243 K. The hydrogen desorption plateau slopes reduce to 0.2 with Ti super‐stoichiometry ratio decreasing to 1.02, but the alloys are very difficult to activate for hydrogen absorption and cannot activate when the Fe substituting for Cr exceeds 0.2. The maximum hydrogen storage capacities were more than 1.85 wt% at 201 K. The reversible hydrogen storage capacities can remain more than 1.55 wt% at 271 K. The enthalpy and entropy for all hydride dehydrogenation are in the range of 21.0 to 25.5 kJ/mol H2 and 116 to 122 J mol−1 K−1, respectively. Our results suggest that Ti1.05Cr0.75Fe0.25Mn1.0 alloy with low enthalpy holds great promise for a high hydrogen pressure hybrid tank in a hydrogen refueling station (45 MPa at 333 K), and the other alloys of low cost may be used for a potable hybrid tank due to high dissociation pressure at 243 K and high volumetric density exceeding 40 kg/m3.

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Section: Introductionmentioning

confidence: 99%

High‐pressure hydrogen storage properties of Ti _x Cr _1 − y Fe _y Mn _1.0 alloys

Jiang

et al. 2019

Int J Energy Res

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“…We consider that this high temperature is required for a kinetic reason caused by the surface oxide layer on AlNi 3 . It was impossible to avoid exposure to air before the in situ SR-XRD measurements, so we were not able to use a clean-surface sample [17,20]. If we used an AlNi 3 sample with a clean surface, it would be hydrogenated below 500°C at 3 GPa.…”

Section: Resultsmentioning

confidence: 99%

Hydrogenation of L12-type AlNi3 alloy at high pressure and temperature

Endo

Saitoh

Machida

et al. 2015

Journal of Alloys and Compounds

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“…For monosubstituted compounds, Fe can be replaced at site 1a in a large extent by Al, Co, Cu, Mn, Ni, Pd, whereas Ti can be substituted at site 1b by Al and Ru in a smaller compositional range. As for bi-substituted compounds, both 1a and 1b sites can be occupied by Al, Ga, Mn, Ru, and V. Monosubstituted compounds forming hydrides include α solid solution (Ru), β phase monohydride (Ni) and γ phase dihydride (Mn) [143][144][145][146][147].…”

Section: Ti-fe Based Systemsmentioning

confidence: 99%

Metal (boro-) hydrides for high energy density storage and relevant emerging technologies

Bannenberg

Heere

Benzidi

et al. 2020

International Journal of Hydrogen Energy

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Hydrogenation of a TiFe-based alloy at high pressures and temperatures

Cited by 18 publications

References 18 publications

High‐pressure hydrogen storage properties of Ti _x Cr _1 − y Fe _y Mn _1.0 alloys

High‐pressure hydrogen storage properties of Ti _x Cr _1 − y Fe _y Mn _1.0 alloys

Hydrogenation of L12-type AlNi3 alloy at high pressure and temperature

Metal (boro-) hydrides for high energy density storage and relevant emerging technologies

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Hydrogenation of a TiFe-based alloy at high pressures and temperatures

Cited by 18 publications

References 18 publications

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

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

Hydrogenation of L12-type AlNi3 alloy at high pressure and temperature

Metal (boro-) hydrides for high energy density storage and relevant emerging technologies

Contact Info

Product

Resources

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High‐pressure hydrogen storage properties of Ti _x Cr _1 − y Fe _y Mn _1.0 alloys

High‐pressure hydrogen storage properties of Ti _x Cr _1 − y Fe _y Mn _1.0 alloys