METHOD FOR RESTORATION PERFORMANCES OF AGED NICKEL-RICH NMC CATHODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY

Method for restoration performances of aged nickel-rich NMC cathode material for lithium-ion secondary battery, the method including: forming a cathode with the aged nickel-rich NMC cathode material and carbon black; and exposing the cathode to diethyl phosphoramidate at an exposure temperature below 160° C. so as to obtain a lithium phosphate protective layer on the cathode.