Improvement of the Electrochemical Properties of LiMn2O4 by Doping Rare Earth Element Ce
A series of cathode materials for Li-ion battery, spinel LiMn2-xCexO4 (x=0-0.03), were synthesized by the method of solid-state reaction at high temperature. The XRD data showed that all the synthesis samples were pure spinel phase. The results of charge-discharge tests show that LiMn1.98Ce0.02O4 has the highest discharge specific capacity of 119.6 mAh/g, and the discharge specific capacity of the material was 108.5 mAh/g after 50 cycles at room temperature with a retention of 91.0%, and the coulombic coefficient was still high up to 99.8%.
Yafang Han, Fusheng Pan, Jianmao Tang, Chungen Zhou
H. L. Zhang et al., "Improvement of the Electrochemical Properties of LiMn2O4 by Doping Rare Earth Element Ce", Materials Science Forum, Vol. 686, pp. 716-719, 2011