Micromixer‐Assisted Co‐Precipitation Method for Fast Synthesis of Layered Ni‐Rich Materials for Lithium‐Ion Batteries

Uniform element distribution is a key factor that influences the performance of Ni‐rich cathode materials. Herein, the Ni‐rich LiNi 0.8 Co 0.1 Mn 0.1 O 2 cathode material has been synthesized with the assistance of a micromixer, which provides ultrafast and homogeneous mixing environments to endow the products with uniform composition distribution. As‐prepared LiNi 0.8 Co 0.1 Mn 0.1 O 2 delivered a high initial discharge capacity of 188.5 mAh g −1 at a 0.2 C rate with a 4.3 V cut‐off potential and reached 95.4 % capacity retention after 50 cycles. LiNi 0.6 Co 0.2 Mn 0.2 O 2 and LiNi 0.9 Co 0.1 O 2 synthesized through this method also exhibited reasonable electrochemical performances, which indicates the feasibility of this novel micromixer‐assisted co‐precipitation method in the synthesis of layered cathode materials. Moreover, the reaction time had been reduced from 12 h to only seconds with the assistance of the micromixers when compared to the traditional co‐precipitation method.