A simple and effective method to synthesize layered LiNi 0.8Co 0.1Mn 0.1O 2 cathode materials for lithium ion battery

Abstract

Nanocrystalline materials of Ni 0.8Co 0.1Mn 0.1(OH) 2 are successfully synthesized by fast co-precipitation method. The crystalline structure and morphology of the precursors and LiNi 0.8Co 0.1Mn 0.1O 2 materials are characterized by XRD, SEM and Rietveld refinement analyses. It is found that the nanocrystalline phase and low crystallinity of Ni 0.8Co 0.1Mn 0.1(OH) 2 could help achieve its uniform mixing with lithium source, and further attribute to highly ordered layered LiNi 0.8Co 0.1Mn 0.1O 2 with low cation mixing degree. Electrochemical studies confirm that the LiNi 0.8Co 0.1Mn 0.1O 2 exhibits a good electrochemical property with initial discharge specific capacity of 192.4 mAh g − 1 at a current density of 18 mA g − 1 , and the capacity retention after 40 cycles is 91.56%. This method is a simple and effective method to synthesize cathode material.