Impact of surface modification of electrode for aluminium air batteries

Superior electrochemical behaviour of Aluminium makes it the perfect metal for use in aluminium air batteries. It is critical to create effective and affordable anodes for Al-air batteries. This study investigates the effects of nickel and nickel-copper electroplated aluminium anodes on battery operation in both alkaline medium KOH and NaOH. The electrochemical impedance spectroscopy (EIS) and anodic polarization curves are used to study the corrosion behaviour of prepared samples. The surface morphologies were examined by scanning electron microscopy (SEM). The corrosion rate measurements and the constant-voltage discharge measurements were carried out then received data indicated that nickel electroplating increases the efficiency of the aluminium anode more than nickel-copper electroplating. However, it generates a barrier film that shields the aluminium from corrosion without inhibiting battery reactions.