The present invention is directed to providing an anode active material for {HEAD ~ rechargeable lithium batteries}, in which {TAIL ~ spinel type MgAl2O4} is substituted into a basic spinel structure represented by Li1.1Mn1.9O4 to provide structural stability and spinel type Co3O4 is substituted into the basic spinel structure of Li1.1Mn1.9O4 to improve electronic conductivity, thereby improving battery performance 
The present invention is directed to providing an anode active material for { HEAD ~ rechargeable lithium batteries } , in which { TAIL ~ spinel type MgAl2O4 } is substituted into a basic spinel structure represented by Li1.1Mn1.9O4 to provide structural stability and spinel type Co3O4 is substituted into the basic spinel structure of Li1.1Mn1.9O4 to improve electronic conductivity , thereby improving battery performance
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