Electrochemical Performances of Novel Vanadium-based Hydrogen Storage Alloy for Automotive Battery

A novel V-based hydrogen storage alloy for automotive battery was prepared by adding 0.204% nano-Cu particles and 0.102% Ga into the V₃TiNi_0.56 alloy,and the microstructure,phase composition of the novel alloy and the electrochemical properties of power battery assembled by the novel alloy were investigated.The results show that the novel alloy is consisted of V-based solid solution phase and TiNi phase,with significant oxidation and reduction peaks in the cyclic voltammetric characteristics curve;The discharge capacity attenuation of the battery by the novel alloy after 6 times of charge-discharge cycles decreases to 9.62% in comparison to that of 98.67% for the battery by V₃TiNi_0.56 alloy,which means significant improvement for the cycle stability of the battery.