Thus, the content of hydrogen fluoride in the electrolyte is lowered to suppress manganese dissolution as much as possible by adding metal oxide nanoparticles MO having {HEAD ~ high electro negativity} in order to realize performance of the spinel anode active material, so that the anode active material may achieve low price, high output, long lifespan and high capacity of rechargeable lithium batteries, as compared with {TAIL ~ the conventional anode active material} 
Thus , the content of hydrogen fluoride in the electrolyte is lowered to suppress manganese dissolution as much as possible by adding metal oxide nanoparticles MO having { HEAD ~ high electro negativity } in order to realize performance of the spinel anode active material , so that the anode active material may achieve low price , high output , long lifespan and high capacity of rechargeable lithium batteries , as compared with { TAIL ~ the conventional anode active material }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL