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- 저자 : M. HosseinpourRokni (검색결과 1 건)
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M. HosseinpourRokni,R. Naderi,M. Soleimani,A.R. Jannat,M. Pourfath,M. Saybani 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.102 No.-
The electrochemical behavior of 5083 aluminum alloy in an alkaline solution in the absence and presenceof two green additives extracted from Mentha piperita L ‘MP’ and Lawsonia inermis ‘LI’ was analyzed inthis 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% at800 ppm of each additive. The performance made the Al alkaline corrosion more uniform, probably byremoving water molecules from the surface as approved by FE-SEM and EDS. Quantum calculations indicatedthe 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. Theeffect 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 capacitydensity by ~2.8 Ah/g and enhance the anode utilization efficiency by ~94% in an air battery. The resultsof this study can open the way for future investigations to replace the synthetic anti-corrosion additivesof Al air-batteries with non-toxic and biodegradable organic ones having similar corrosion inhibition performancewithout restricting anode discharge currents.
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