An Efficient Synthetic Method to Prepare High-Performance Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ for Lithium-Ion Batteries

Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ (NCM811) cathode material is one of the most promising cathodes for lithium-ion batteries with high energy density. However, the commonly used synthetic methods for this material are time-consuming and costly, limiting their practical application. Herein, an efficient synthetic method for preparing uniform spherical NCM811 particles was developed by combining rapid coprecipitation and spray drying techniques. The as-obtained NCM displays superior cycling stability and rate capabilities even at harsh conditions, such as high cutoff voltage (4.5 V) or elevated temperature (60 °C). Moreover, the NCM811/graphite full cell exhibits a high capacity retention of 94.7% after 200 cycles at 1 C and superior rate capability of 140.9 mAh g^–1 at 10 C. These results demonstrate the commercialization possibility of our developed methods for preparing NCM and other electrode materials, at large scale and low cost.