Effect of calcination temperature on the structure and electrochemical performance of limn1.5ni0.5o4 cathode materials

Abstract

Spinel limn1.5ni0.5o4 cathode powders with different morphologies were synthesized by a co-precipitation method using oxalic acid. The calcination temperature affected the morphologies, crystalline structure and electrochemical properties of the limn1.5ni 0.5o4 powders. The LiMn1.5Ni0.5O4 powders obtained at a calcination temperature of 850 °C exhibited the highest initial discharge capacity with good capacity retention and high rate capability.