ANODE ACTIVE MATERIAL FOR SECONDARY BATTERY, PREPARATION METHOD THEREOF AND SECONDARY BATTERY COMPRISING THE SAME

The present disclosure relates to an anode active material for a sodium ion secondary battery, a method for preparing the same, and a sodium ion secondary battery including the same. More particularly, the anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide obtained by a simple precipitation process, and can be applied to a sodium ion secondary battery having high capacity characteristics.