Known as one of the most promising application of metal hydride(MH),the MH compressor can afford hydrogen with high pressure and high purity.Two AB5 type multi-component hydrogen storage alloys and vanadium are studied for the purpose of high pressure compression.A compact compression system has been built.Each designed small-size reactor contains seven special stainless-steel pipes.The single stage compressor can improve the hydrogen pressure from 2 up to 35 MPa with the hydrogen desorbed per unit mass of 207.8 mL/g.The two-stage compression can output hydrogen with pressure of 38 MPa steadily in whole 5.7 mol hydrogen output flow.However,its hydrogen desorbed per unit mass was only computed to 106.9 mL/g as a result of two reactors used in the cycle and the output mass of hydrogen increased less.
