Influence of Rare Earth Samarium/Ytterbium Salt on Electrochemical Corrosion Behavior of Aluminum-Based Anode for Batteries

In this work, effects and mechanism analysis of samarium acetate ytterbium on enhancing the electrochemical corrosion performance aluminum-based anode for aluminum-air batteries in 3.5 wt.% NaCl are studied by methods such as weight loss tests, measurements, galvanostatic discharge tests microscopic morphology analysis. The results show that ideal electrolyte additives, exhibit obvious inhibitory self-corrosion 7075 aluminum alloy. optimal concentration is 200 mg/L. Moreover, inhibitors mainly reduce speed suppressing microcathodic reaction, thereby promoting improvement batteries. Simultaneously, it found after mixing different proportions, two rare earth salts have a mutual adjustment effect. By adding salt components, battery capacity densities improved 9.6% to 16.3%. Finally, possible model presented illustrate impact additives process