Electrochemical hydrogen storage properties of melt-spun Ti_0.9Zr_0.1V_0.2Ni_1.5La_0.5 alloy

Abstract

The Ti_0.9Zr_0.1V_0.2Ni_1.5La_0.5 alloy samples were synthesized by melt-spinning technique at the different wheel velocity (cooling rate), and the structure and electrochemical hydrogen storage properties were investigated. The result indicated that the structure of the melt-spun ribbons mainly contains C14 Laves phase and V-based solid solution phase. The discharge capacity, cyclic stability, high-rate discharge ability and electrochemical kinetic of the alloy electrodes are correlated with the cooling rate (wheel velocity), and the maximum discharge capacity is over 200 mA·h/g at the wheel velocity of 20 m/s.

Keywords

Ti_0.9Zr_0.1V_0.2Ni_1.5La_0.5 alloy / melt-spinning / hydrogen storage / electrochemical properties

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg