Abstract
Abstract The electrochemical behavior of LaNi 3.55 Mn 0.4 Al 0.3 Co 0.75 material was investigated with the help of a cavity microelectrode. The cyclic voltammetry study versus the scan rate evidenced the formation of a passivation layer, which is characterized by a positive current during the cathodic sweep. The performances of the LaNi 3.55 Mn 0.4 Al 0.3 Co 0.75 compound as a negative electrode for nickel–metal hydride (Ni–MH) battery can also be determined with the cavity microelectrode. It was shown that even in drastic potential sweep conditions, the material exhibits a very good reversibility during several thousands of cycles.
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