Electrochemical hydrogen storage in (Ti1−V )2Ni (x= 0.05–0.3) alloys comprising icosahedral quasicrystalline phase

Electrochemical hydrogen storage properties of Ti1.4V0.6Ni quasicrystal and TiH composite materials

“…For example, on the condition of 10 6 -10 9 K/s for the melt-spun quasicrystal [13], Ti-V-Ni alloy system possesses a strong quasicrystal-forming ability [5]. Fig.…”

“…Realistically, Ti-Zr-Ni alloys, which can be produced in amorphous, quasicrystal and crystalline forms, offer the potential for low-cost, hydrogen-storage materials with characteristics that may be suitable for some other static applications. Currently, quasicrystalline Ti-V-Ni alloys containing minor crystalline Ti 2 Ni phase reported by Hu et al [5,6] were beneficial to the improvement of the electrochemical properties of Ti 2 Ni alloy. However, there is still an apparent capacity loss of the alloys during the process of cycling.…”

Ti2Ni alloy: a potential candidate for hydrogen storage in nickel/metal hydride secondary batteries

“…Recently, Hu et al showed that the substitution of Ti by V and/or the change of crystalline structure are beneficial to the improvement of the cycle life of Ti 2 Ni alloys. 35 The (Ti 1Àx V x ) 2 Ni (x ¼ 0.05-0.3) alloys, mainly consisting of an icosahedral quasicrystalline phase, have a minor fcc Ti 2 Ni phase. It is known that the bulk alloy structures play an important role in the electrochemical properties of hydrogen storage alloys.…”

Effect of Mechanical Milling on the Structure and Electrochemical Properties of Ti2Ni Alloy in an Alkaline Battery

“…Nevertheless, the substitution shows a slight benefit for improving the cycle life of Ti 2 Ni alloy. Recently, Hu et al showed that (Ti 1− x V x ) 2 Ni ( x = 0.05−0.3) alloys mainly consisting of the icosahedral quasicrystalline phase have large discharge capacities of approximately 250 mA h g −1 , which is much higher than that of the Ti 2 Ni alloy reported by Luan et al Moreover, the cycle life of Ti 2 Ni alloy could be significantly improved by the substitution of Ti by V and/or the change of the crystalline structure. It is known that the bulk alloy structure plays an important role in the electrochemical properties of hydrogen-storage alloys. − To our best knowledge, there is no report regarding the effect of the bulk structure on the electrochemical performance of Ti 2 Ni alloy.…”