Electrochemical hydrogen storage characteristics of TiVNi-quasicrystalline composite materials
by Wanqiang Liu; Shanshan Zhang; Wen Hu; Limin Wang
International Journal of Nanotechnology (IJNT), Vol. 10, No. 1/2, 2013

Abstract: The Ti_1.4V_0.6Ni ribbon alloy and VTZN (V₅Ti₉Zr_26.7Ni₃₈Cr₅Mn₁₆Sn_0.3) alloy ingot are prepared by melt-spinning technique and induction levitation melting technique, respectively. The Ti_1.4V_0.6Ni + 20 wt.% VTZN mixture powders are synthesised by ball-milling the above prepared alloy ingots, and their structures and the electrochemical hydrogen storage properties are investigated. It is found that the icosahedral quasicrystal, FCC and BCC structural solid solution phase are all presented in the composite material. The maximum electrochemical discharge capacity of the composite electrode is 308.2 mAh/g at the discharge current density of 30 mA/g and 303 K. In addition, the electrode made of Ti_1.4V_0.6Ni and AB₃ composite holds better high-rate discharge ability than that of Ti_1.4V_0.6Ni.

Online publication date: Fri, 07-Dec-2012

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