▎ 摘　　要

Accumulations of waste dry cell batteries create irreparable damage to the environment. To address this issue, herewith we recycle the graphite electrode from waste dry cells to serve as a precursor for synthesising graphene electrolyte additives in metal-O(2)battery system. Magnesium-O(2)battery is an interesting option due to its high theoretical energy density (6800 WhKg(-1)) but tuning the electrode-electrolyte interfacial layer plays a major role. Utilizing La1-xCaxMnO3(x = 0.70, 0.80 and 0.90) manganite perovskite and polar interspersed graphene as protective electrode-electrolyte passivation layers, drastically increases the battery performance. La(1-x)Ca(x)MnO(3)protective layer enhances the charge separation, charge transfer, reaction kinetics and reduces the charge recombination at the electrode surface. The specific discharge capacity of newly prepared La1-xCaxMnO3/interspersed graphene based Mg-air battery system is 1595.3 mAhg(-1), which makes it more superior to regular Mg-O(2)battery (890 mAhg(-1)). The interspersed graphene -based Mg/La(1-x)Ca(x)MnO(3)air battery shows excellent discharge capacity and notable electrochemical characteristics, which opens whole new spectrum of opportunity in modern electric vehicles.