Investigations of hydrogen sorbing Ti(Zr)-Ni alloys as electrode materials for nickel-metal hydride storage accumulators

摘要

The created equipment on the basis of III-50-l potentiostates and computer allowed us to study the cyclic charge-discharge characteristics of partly substituted and oxygen-containing derivatives of the Ti_2Ni alloy. For the Ti_(3.8)Zr_(0.2)Ni_2O_x alloys a two-fold increase in discharge capacity with the rise in oxygen content from x = 0 to x = 0.3 had been observed. For Ti_4Ni_2O_(0.3) alloy the hydrogenation-disproportionation-desorption-recombination process (HDDR) was shown to positively influence the homogeneity of the alloy as well as electrochemical charge-discharge parameters in alkaline electrolyte.