Akademik Veri Yönetim Sistemi
10th International Conference on Materials Science and Nanotechnology for Next Generation, MSNG2023, Kayseri, Türkiye, 27 Eylül - 29 Ekim 2023, ss.75
In this study, the corrosion performance of the pure Al anode was examined for the operating conditions of the Al-air battery at temperatures lower than room temperature. Tafel analysis was carried out for the pure Al anode produced by the casting method at a temperature range of 10-30 C and in a 5M NaOH alkaline media. The effect of temperature change in 5 C steps on electrochemical performance was examined. Potentiodynamic polarization analysis was performed for the data obtained with a computer-aided three-electrode measurement system. An Ag/AgCl reference electrode and a platinum sheet (1×1 cm) counter electrode were used. The working electrode is designed to have an active surface area of 1 cm2.
The results show that the corrosion potential (Ec) shifts towards negative values as the temperature increases. Corrosion current density (Jc) increases with increasing temperature. For the pure Al electrode, the Jc at 30 C was 37.2 mA cm-2, while its value at 10 C was only 11.8 mA cm-2. In addition, electrochemical parameters such as anodic slope (βa), cathodic slope (βc), polarization resistance (Rp), and corrosion rate (CR) of the Al electrode were obtained. The results show that as the temperature decreases, electrochemical activity slows down and anodic dissolution decreases. It may be useful for researchers to consider these results in anode material research for Al-air battery performance for low temperature climatic conditions.