Preparation of single-crystal ternary cathode materials <i>via</i> recycling spent cathodes for high performance lithium-ion batteries
Cheng Huang, Xue Xia, Ziwei Chi, Zeheng Yang, Haijian Huang, Zhangxian Chen, Weijian Tang, Guoqing Wu, Huayong Chen, Weixin Zhang
Abstract
and a superior capacity retention of 94.3% can be achieved by the recycled cathode material even after 240 cycles at 1 C. Meanwhile the single-crystal structure can be well reserved without any cracks or pulverization being observed. Moreover, this recycling method can be expanded to recycle other waste Ni-Co-Mn ternary cathode materials (NCM) or their mixtures for producing high-performance single-crystal cathode materials, demonstrating its versatility and flexibility in practical applications. Therefore, the strategy of converting spent NCM cathodes into single-crystal ones with satisfactory electrochemical performance may open up a cost-effective pathway for resolving the issues caused by the large amounts of spent LIBs, thus facilitating the sustainable development of LIBs.