Abstract:The hydrogen storage properties of Ti0.8Zr0.2Mn1.2Cr0.6(V-Fe)0.2 alloy and its rare earth modification effect were studied. The results show that Ti0.8Zr0.2Mn1.2Cr0.6(V-Fe)0.2 alloy has excellent comprehensive hydrogen storage performance, with a hydrogen storage capacity more than 2 wt% at room temperature. After adding rare earth La or Ce for modification, the activation performance is further improved. The alloy added with 5wt% Ce can be activated by only one hydrogen absorption and desorption cycle, and has good hydrogen absorption and desorption cycling stability. After 100 hydrogen absorption and desorption cycles, the hydrogen absorption rate does not change significantly, and the capacity retention rate is 99%. A tubular hydrogen storage equipment with capacity greater than 180 N·m3 was designed and manufactured using this alloy as the medium, and it was combined with a fuel cell to form a hydrogen-electric conversion system, which could provide stable power generation and generate power more than 200 kW·h at one time when filled with hydrogen.