Electrochemical Characteristics of Porous Electrode Consisting of Spherical LiMn2O4 Particles

We obtained mono-dispersed spherical LiMn2O4 particles via spherical MnCO3 intermediate material by co-precipitation method that was one of soft chemical techniques. We fabricated a sintered type porous electrode that consisted only of active material. The electrochemical characteristics of prepared sintered electrode were compared with general composite electrode including conducting material and binding material. The discharge capacity and average discharge voltage of the sintered electrode were relatively higher than those of the composite electrode. It is suggested that an internal resistance of the sintered electrode is lower. Here, we propose that the simplification using the sintered electrode is useful for understanding behavior of rechargeable lithium ion batteries by means of mathematical simulation.