Co-precipitation preparation of Ni-Co-Mn ternary cathode materials by using the sources extracting directly from spent lithium-ion batteries

In recent years, enormous effort have been made in recycling spent lithium-ion batteries (LIBs), but more efficient and energy efficient methods still need to be found. In this work, we propose a new recycling process which can directly use recycled metals as raw materials to re-synthesize LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode material based on co-precipitation method. The influence of temperature on the physical and electrochemical properties of the regenerated material has been studied by changing sintering temperature. The as-produced regenerated cathode materials gain the electrochemical performance as well as the commercial LiNi 0.5 Co 0.2 Mn 0.3 O 2 . Cop-830 ℃ obtained at sintering temperature of 830 ℃ still delivers 149.2 mAh g −1 after 100 cycles at 0.2 C rate, which is 92.4% of its initial capacity. It confirms that the optimized sintering temperature is essential for the regeneration of spent ternary cathode materials in potential application. • Recycling process is successfully processed directly use recycled metals. • LiNi 0.5 Co 0.2 Mn 0.3 O 2 was regenerated from spent LIBs by co-precipitation method. • Electrochemical properties of regenerated materials reach to commercial materials. • Cop-830 ℃ delivers 149.2 mAh g −1 after 100 cycles at 0.2 C, 92.4% of initial capacity.