The electrochemical behavior of 5083 aluminum alloy in an alkaline solution in the absence and presence of two green additives extracted from Mentha piperita L ‘MP’ and Lawsonia inermis ‘LI’ was analyzed in this study. Corrosion-related investigations disclosed the mixed-type adsorptive function of the compounds, which reduced Al parasitic dissolutions and consequent H₂ evolutions by about 80% at 800 ppm of each additive. The performance made the Al alkaline corrosion more uniform, probably by removing water molecules from the surface as approved by FE-SEM and EDS. Quantum calculations indicated the molecular adsorption type and the role of influencing functional groups, particularly =O and –COO(H,CH₃) which were the most influencing. These results were also confirmed by FT-IR analysis. The effect of the additives on the dissolution of Al anode was investigated under different discharging rates, clarifying how the employed electrolyte containing the green extracts could improve Al anode capacity density by ~2.8 Ah/g and enhance the anode utilization efficiency by ~94% in an air battery. The results of this study can open the way for future investigations to replace the synthetic anti-corrosion additives of Al air-batteries with non-toxic and biodegradable organic ones having similar corrosion inhibition performance without restricting anode discharge currents.

本研究分析了 5083 铝合金在碱性溶液中的电化学行为，在不存在和存在两种从胡椒薄荷 L'MP' 和 Lawsonia inermis 'LI' 中提取的绿色添加剂的情况下进行了分析。与腐蚀相关的研究揭示了这些化合物的混合型吸附功能，在每种添加剂的浓度为 800 ppm 时，该功能将铝寄生溶解和随之而来的 H ₂释放减少了约 80%。该性能使铝碱腐蚀更加均匀，可能是通过 FE-SEM 和 EDS 批准从表面去除水分子。量子计算表明分子吸附类型和影响官能团的作用，特别是 =O 和 -COO(H,CH ₃) 影响最大。这些结果也通过 FT-IR 分析得到证实。在不同的放电速率下研究了添加剂对铝负极溶解的影响，阐明了使用含有绿色提取物的电解液如何将铝负极容量密度提高约 2.8 Ah/g 并将负极利用效率提高约 94%。一个空气电池。这项研究的结果可以为未来的研究开辟道路，以在不限制阳极放电电流的情况下，用具有相似缓蚀性能的无毒和可生物降解的有机添加剂代替铝空气电池的合成防腐添加剂。