Abstract
The uniform layered LiNi 1/3Co 1/3Mn 1/3O 2 cathode material for lithium ion batteries was prepared by using (Ni 1/3Co 1/3Mn 1/3)C 2O 4 as precursor synthesized via oxalate co-precipitation method in air. The effects of calcination temperature and time on the structure and electrochemical properties of the LiNi 1/3Co 1/3Mn 1/3O 2 were systemically studied. XRD results revealed that the optimal calcination conditions to prepare the layered LiNi 1/3Co 1/3Mn 1/3O 2 were 950°C for 15 h. Electrochemical measurement showed that the sample prepared under the such conditions has the highest initial discharge capacity of 160.8 mAh/g and the smallest irreversible capacity loss of 13.5% as well as stable cycling performance at a constant current density of 30 mA/g between 2.5 and 4.3 V versus Li at room temperature.
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