Effect Of Temperature On The Electrochemical Performance Of Licu0.04mn1.96o4 Prepared By A Molten-Salt Combustion Method

Spinel LiCu0.04Mn1.96O4 compounds were fabricated by a molten-salt combustion method. The results of X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) confirm that the copper additive incorporates into the LiMn2O4 lattice, the lattice parameters and average particle size increase gradually with increasing two-stage calcination temperatures. The effect of two-stage calcination temperature on the electrochemical properties of the LiCu0.04Mn1.96O4 materials was investigated by galvanostatic charge/discharge tests and cyclic voltammetry (CV). Results showed that the structural stability of the materials was improved due to Cu-doping. The LiCu0.04Mn1.96O4 materials calcined at 600. demonstrated excellent electrochemical performance with an initial discharge specific capacity of 119.1 mAh g(-1), and the capacity retention was 90.6% after 100 cycles at 0.5 C.