Preparation of New Vanadium Based Solid Solution Hydrogen Storage Material by Ultrasonic Stirring Assisted Casting

In order to improve the properties of V-based solid solution hydrogen storage materials,ultrasonic stirring assisted casting method was used to prepare a new V-based solid solution hydrogen storage material V₃ TiNi_0.56Co_0.1Al_0.2.The phase compositions,microstructure,hydrogen absorption and desorption properties and corrosion resistance of the material were tested and analyzed.The results show that the new material consists of V-based solid solution phase,small amount of TiNi and Ti₂ Ni phases,and it has favorable hydrogen absorption and desorption properties and corrosion resistance,of which the maximum hydrogen absorption capacity at room temperature is 1.781% and the plateau pressure of hydrogen desorption at room temperature is 0.46 MPa,and the corrosion potential shifts positively by 709 mV in comparison to V₃ TiNi_0.56.