Electrochemical Properties of Li-Riched Li[Li0.2Co0.4Mn 0.4]O2 Cathode Material for Lithium Ion Batteries
The Li[Li0.2Co0.4Mn0.4]O2 cathode material was prepared by a sol-gel method. The X-ray diffraction (XRD) spectroscopic showed that the material was a solid solution of LiCoO2 and Li2MnO3. The material showed a reversible discharge capacity of 155.6 mAhg−1 in the voltage window of 2.0-4.3 V after percharge to 4.6 V. While the material cycled in the same voltage window without precharge could only deliver capacity of 77.6 mAhg−1. This high capacity was attributed to the loss of oxygen and structural rearrangement in the precharge process.
Weiguo Pan, Jianxing Ren and Yongguang Li
Z. Li et al., "Electrochemical Properties of Li-Riched Li[Li0.2Co0.4Mn 0.4]O2 Cathode Material for Lithium Ion Batteries", Advanced Materials Research, Vols. 347-353, pp. 3658-3661, 2012