Effects of Solidification Mode on Electrochemical and Hydrogen Storage Properties of Vanadium-based Alloy

The vanadium-based hydrogen storage alloy V₃TiNi_0.56Cr_0.4 was respectively prepared by solidification modes of air cooling,water cooling and liquid nitrogen cooling,and the electrochemical and hydrogen storage properties of the obtained alloy were tested and analyzed. The results show that solidification mode has evident effects on the electrochemical and hydrogen storage properties of the alloy. Respectively using air cooling,water cooling and liquid nitrogen cooling,the discharge capacity of the alloy after charge-discharge cycles for 20 times is decayed by 84%,73% and 38%,while the maximum hydrogen uptake at room temperature can reach to 1.467%,1.514% and 1.832%,respectively.