Investigation Of Preparation And Doping Of Lithium-Manganese-Nickel Oxides Cathode Materials

Recently rechargeable lithium-ion batteries based on the uses of intercalation compounds as cathode materials are becoming increasingly important as the main power sources in portable electronic devices, such as Personal Communication Services(PCSs),cellular phones, camcorders, and notebook PCs, because these batteries have superior properties like high voltage, high energy density and light weight.Currently,LiCoO2 is being used as the cathode material in the majority of commercial lithium-ion batteries with good capacity ,reversibility and rate capability, but suffers from high cost and the relatively toxicity of cobalt.Much effort has been made to develop possible alternatives as a positive electrode. To this end , LiNiO2 and LiMnO2 have been studied extensively, Although there has been a lot of progress, they still possess various problems for practical applications. synthesis and characterization of solid solution have been an important research field in material science.In this work, layered Li[NixLi1/3-2x/3Mn2/3-x/3]O2(0