The influence of oxygen modification and alloying on charge-discharge characteristics of MH-electrodes on the basis of Ti_2Ni alloys

摘要

The improvement of discharge capacity for MH-electrodes on the basis of hydrides of Ti_(4-x)Zr_xNi_2O_y alloy (0.2<=x<=0.6; 0.2<=y<=1.0 was shown during simultaneous partial substitution of Ti->Zr and oxygen modification. The best discharge capacity (311 A X h/kg) was found experimentally for MR-electrode based on Ti_(3.6)Zr_(0.4)Ni_2O_(0.6)H_(5.2). A high-cyclic stability was shown for oxygen-containing Ti_(3.6)Zr_(0.2)V_(0.2)Ni_2O_(0.3) and Ti_(3.8)V_(0.2)Ni_2O_(0.3) alloys alloyed with vanadium.