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 LiNi0.5Co0.2Mn0.3O2 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 LiNi0.5Co0.2Mn0.3O2. Cop-830 degrees C obtained at sintering temperature of 830 degrees C 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. (c) 2022 Elsevier B.V. All rights reserved.