Hydrogenation properties and microstructure of Ti–Mn-based alloys for hybrid hydrogen storage vessel

High-pressure hydrogenation properties of Ti–V–Mn alloy for hybrid hydrogen storage vessel

“…Those alloys consisted of the C14 Laves phase, the BCC phase, and the minor phase of FCC. The FCC phase corresponded to oxide of Ti-V-Mn as mentioned in the latest report [4]. In the similar case, (Zr 0.75 Ti 0.25 ) 3 (MnV) 3 O of the -carbide type oxide A 3 B 3 O precipitated in as-cast of Zr 0.75 Ti 0.25 MnV alloy has been reported by Hout et al [17].…”

“…1 [4,5,[11][12][13][14]. Among the Ti-V-Mn alloys, a Ti0.5V0.5Mn alloy showed the excellent effective hydrogen capacity and the suitable hydrogen equilibrium pressure for using in a hybrid hydrogen storage ves- sel [4]. The hydrogen absorption/desorption pressures were in the ranges of 0.6-1.0 MPa/0.2-0.4 MPa at 243 K. The hydrogen capacity was 1.8 wt% at 243 K and did not saturated under H 2 of 7 MPa.…”

“…In the recent studies, Ti-Cr-Mn C14 Laves phase (hexagonal MgZn 2 structure) alloys [2], Ti-Cr-V-Mo BCC phase alloys [3], and Ti-V-Mn C14-BCC composite phase alloys [4] have been reported as the hydrogen storage materials for the hybrid hydrogen storage vessel.…”

“…The Ti-Mn-based alloys have been investigated to improve the effective hydrogen capacity, the plateau pressure, the hysteresis pressure, the hydriding-dehydriding kinetics, the cycle property, and the standard enthalpy of hydride formation smaller than 30 kJ/mol by substituting transition metals for Ti in the A site and Mn in the B site [4][5][6][7][8][9][10][11][12]. Particularly, the hydrogen capacity and the plateau pressure were influenced by V substitution into the Ti-Mn-based alloys [9][10][11][12][13][14][15][16].…”

Nanocrystalline Metal Hydrides Obtained by Severe Plastic Deformations

“…BCC alloys of systems Ti-V-Mn and Ti-V-Cr have been intensively studied for hydrogen storage [37][38][39][40][41][42]. They could also be used as catalyst for magnesium [43].…”