Abstract
We report the effect of LiH on the discharge performance of electrodes which are consist of Ti41.5Zr41.5Ni17 quasicrystal in this paper. The Ti41.5Zr41.5Ni17 alloy ribbons are prepared by arc-melting and melt spinning technique subsequently. The final product of Ti41.5Zr41.5Ni17 and LiH composite materials is produced by mechanical alloying (MA) for 20min, and it is investigated by a three-electrode cell at room temperature. The maximum discharge capacity can achieve 146.6mAh/g around for Ti41.5Zr41.5Ni17 and LiH composite materials electrode at the first discharge process, which is higher than 96.5mAh/g of Ti41.5Zr41.5Ni17 quasicrystal at the third discharge process. High-rate dischargeability and cycling stability are improved by adding LiH, which may attribute to the reversible reaction of LiH that enhances the electrochemical reaction activity in the process of electrochemical reaction. The discharge process is also characterized by electrochemical impedance spectroscopy.
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