Abstract
On the basis of experimental investigation, the electrochemical properties of AB5 hydrogen storage alloys La0.54Ce0.28Pr0.18Ni4-xCo0.6Mn0.35Alx (x=0.1, 0.2, 0.3) using at -40°-25°C are discussed. The obtained results showed that the discharge capacity at different temperature, the high rate discharge property and the cycling life of the alloy electrode are in close relationship with the x value. When x increases from 0.1 to 0.3, the discharge capacities with discharge current density of 60mA/g are slightly decreased at 25 °C, evidently decreased at -40 °C, and the cycle life was slightly improved. And the element Al is detrimental to the high-rate property of AB5 alloy.
