Abstract
The electrochemical properties of LaNi
3.55Mn
0.4Al
0.3Co
0.4Fe
0.35 hydrogen storage alloy have been studied through chronopotentiometric, chronoamperometric and cyclic voltammogram measurements. The maximum capacity value obtained was 265
mAh
g
−1 at rate C/6 and the capacity decrease was recorded by 1.5% after 30 cycles. The values of the hydrogen diffusion coefficient D
H obtained through cyclic volammogram and chronoamperometric techniques were, respectively, 7.01
×
10
−8
cm
2
s
−1 and 4.23
×
10
−11
cm
2
s
−1.