Novel cathodic materials for Aluminum-air battery

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Metal-air batteries have gained great interest due to their high energy density and capacity, low cost (depending on the metal anode), the negligible dependence of their capacity on operating load and temperature, and constant discharge voltage. Up to now, several different types of metal-air batteries, such as lithium (Li)-air, sodium (Na)-air, potassium (K)-air, zinc (Zn)-air, magnesium (Mg)-air, and aluminum (Al)-air batteries have been extensively studied. Metal-air batteries exhibit high theoretical energy densities ranging between 2 10 folds higher than lithium ion battery (LIBs).In this review, we have covered some novel and important cathode materials for Al Air battery such as PANI/Fe, Mn3O4-N-G, Ag/N-rGO, PEDOT/MnO2/carbon, and Ag-MnO2, in addition to the electrochemical measurements of these cathode materials. From this review, the different behavior of these materials as cathode is mentioned.