Development of Thermodynamic Database of Ti-V-Based Hydrogen Storage Alloys

In this work,Ti-V-based hydrogen storage alloys have been studied because of their high hydrogen absorption/desorption capacities and good activated properties. Experimental data of phase equlibria and thermodynamic assessments of the sub-binary/ternary systems in the Ti-V-based multi-component systems are reviewed in reported literature. Based on the measured phase diagram data and thermochemica information, thermodynamic parameters formulating the Gibbs energies of various phases in some sub-binary/ternary systems of Ti-V-based multi-component alloys are assessed using the CALPHAD method. A set-consistent thermodynamic database of the Ti-V-based multi-component system is developed, which is helpful to study the relations between alloy compositions, microstructure and hydrogen storage properties in order to design novel Ti-V-based hydrogen storage alloys.