Taking V3TiNi0.56Al0.2 hydrogen storage alloy as the research object， the V3TiNi0.56Al0.2 hydrogen storage alloy  sample was forged by multi-directional forging method， and a comparative analysis was conducted on the microstructure， hydrogen absorption and desorption properties， and charge-discharge cycle stability with those of the billet samples before forging. The results show that the multi-directional forging refines the grain inside the V3TiNi0.56Al 0.2 hydrogen storage alloy and improves its hydrogen absorption and desorption 

properties and charge-discharge cycle stability. 

The average grain size of V3TiNi0.56Al0.2 hydrogen storage alloy after multi-directional forging is 13 μm， the maximum hydrogen absorption capacity is 2.854 wt.%， the maximum discharge capacity reaches 337.1 mAh·g-1 after the first charge-discharge cycle， and the discharge capacity decay rate is 15.0% after 1000 charge-discharge cycles. 

 

Compared with the billet sample before forging， the average grain of V3TiNi0.56Al0.2 hydrogen storage alloy sample after multi-directional forging decreases by 35 μm， and the maximum hydrogen absorption capacity increases by 1.836%， the maximum discharge capacity increases by 181.4  mAh·g-1， and the discharge capacity decay rate decreases by 56.6%.