Electrochemical Properties of xLiMnO3·(1-x)LiMn0.33 Co0.33Ni0.33O2 Cathode Materials Prepared by Co- Precipitation

Currently, LiCoO2 has been the most widely used as a commercial cathode material for the lithium secondary batteries due to its characters of high rate capability and long cycle life. But it has some disadvantages such as poor thermal stability, safety and toxicity. These disadvantages limit the use of LiCoO2 materials in large capacity and high power lithium secondary batteries such as hybrid electric vehicles (HEV) and power tools. Recently, many research groups have studied the complex layered compound to replace LiCoO2 cathode material for Lithium ion battery. Solid solution materials between layered Li2MnO3 and LiMO2 (M=Mn, Ni, and Co etc.)[1–4] have been found to be attractive cathodes for lithium ion batteries as some of them exhibit much higher capacity with lower cost and better safety than LiCoO2 cathode