Abstract
This study is aimed to determine the appropriate anode material (pure Al, 6013-T6; Al1 and 7075-T7351; Al2) for Al-air batteries. Electrochemical Measurements, Galvanostatic Anodic Dissolution Test and Surface Characterization are performed. The corrosion rate and the hydrogen gas evolution rate are calculated. Anodic dissolution test is carried out at the current density of 10–50 mA cm−2. The weight loss measurements were performed. The anode utilization (Ua%) and capacity density are calculated. The surface morphology of electrodes is investigated by scanning electron microscope (SEM) and mapping imagines are taken. The surface analysis also is performed by energy dispersive X-ray spectrometer (EDS) and contact angles are determined by Young–Laplace Contact Angle method. As a result, it is seen that alloy elements change the surface characteristics during discharging of the battery and the battery performance is positively affected. Especially, copper shows surprisingly synergistic effect with aluminium on the alloy surface.
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