A simple and effective method to synthesize layered LiNi0.8Co0.1Mn0.1O2 cathode materials for lithium ion battery

Nanocrystalline materials of Ni0.8Co0.1Mn0.1(OH)2 are successfully synthesized by fast co-precipitation method. The crystalline structure and morphology of the precursors and LiNi0.8Co0.1Mn0.1O2 materials are characterized by XRD, SEM and Rietveld refinement analyses. It is found that the nanocrystalline phase and low crystallinity of Ni0.8Co0.1Mn0.1(OH)2 could help achieve its uniform mixing with lithium source, and further attribute to highly ordered layered LiNi0.8Co0.1Mn0.1O2 with low cation mixing degree. Electrochemical studies confirm that the LiNi0.8Co0.1Mn0.1O2 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.

Graphical AbstractLiNi0.8Co0.1Mn0.1O2 materials are synthesized via fast co-precipitation method: (a) 1 min, (b) 5 min, (c) 10 min, (d) 20 min, (e) 60 min. XRD patterns exhibit that, with the precipitation time decreasing, the patterns show clearer split of the (006)/(102) and (108)/(110) peaks, indicating higher degree of ordered hexagonal structure.Figure optionsDownload full-size imageDownload as PowerPoint slide