Title: Electrochemical hydrogen storage characteristics of TiVNi-quasicrystalline composite materials

Authors: Wanqiang Liu; Shanshan Zhang; Wen Hu; Limin Wang

Addresses: School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China. ' School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China. ' State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, CAS, Changchun 130022, China. ' State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, CAS, Changchun 130022, China; Changzhou Institute of Energy Storage Materials and Devices, Changzhou 213000, China

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.

Keywords: electrochemical hydrogen storage; titanium alloys; vanadium; nickel; icosahedral quasicrystals; TiVNi alloys; VTZN alloys; composite materials; melt spinning; induction levitation; structures; ingots; quasicrystalline composites; nanotechnology.

DOI: 10.1504/IJNT.2013.050884

International Journal of Nanotechnology, 2013 Vol.10 No.1/2, pp.80 - 88

Published online: 07 Dec 2012 *

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