Five LaNi5-type hydrogen storage alloys were prepared. Their electrodes?discharge capacity,high rate charge-discharge ability, temperature effect,crystal structure and cycling stability were investigated. The XRD results indicated that alloys examined in this work seem to be of single phase with the hexagonal CaCu5-type crystal structure. After 400 charge-discharge cycles, the same crystal structure remained, for some of oxides, for instance, Mm(OH)3 and La(OH)3;The composition of stannum or silicon stabilizes the cycle life and improves the high rate charge-discharge abilities of their electrodes;The electrochemical capacity of sample (Ml0.90Nd0.10)Ni3.60Co0.50Mn0.40Al0.18Si0.42 is above 290.72 mAh.g-1, with capacity preserving being above 70% after 400 charge-discharge cycles. Its 5C rate charge efficiency is higher than 95%,and 5C rate discharge efficiency higher than 90%. It also performs well at various operating temperatures.