Influences of Nd3+ doping on structure and electrochemical performance of layered Li1.05V3O8

Nd3+ -doped Li1.05V3O8 was synthesized by liquid-state reactions combined calcination. The influences of Nd3+ doping on physical and electrochemical performances of Li1.05V3O8 were investigated using X-ray diffraction (XRD), cyclic voltammograms, a.c. impedance and galvanostatic charge-discharge tests, etc. Results indicated that Nd3+ -doped products had well developed crystal structure of layered LiV3O8 and uniform particle size distribution. Nd3+ doping with a proper amount improved the initial discharge capacity, discharge voltage and ion conductivity of the cathode material to some extent. Nd3+ did not participate in the electrochemical reactions and was beneficial to stability of the crystal structure during cycling.