Directly-Regenerated Licoo2 with a Superb Cycling Stability at 4.6 V

• DOI: 10.2139/ssrn.4336617
• Publication Date: 2023-01-31T11:25:23Z
• Authors: Yongsheng Ji; Dan Yang; Yujun Pan; Zhikang Liu; Zhenglu Zhu; Xiaoqun Qi; Mingyuan Ma; Ruining Jiang; Fengyi Yang; Kaiyuan Shi; Long Qie; Yunhui Huang
• Keywords: Cycling

The exponential growth of “3C” (computer, communication, and consumer electronics) market generates an ever-increasing demand on recycling materials from the end-of-life LiCoO2 (LCO) batteries with ecological efficient methods. Herein we present a direct scalable approach to recycle degraded LCO by healing stabilizing their damaged structure via solid reactions. as-proposed constructs protective layer onto regenerated particles suppress O3 H1-3 phase transition at 4.55 V. Benefiting unique design, superb electrochemical performance was achieved for LCO, exhibiting high specific capacity retention 85.9% after 100 cycles charging cutoff voltage 4.6 V rate capability, which are even superior those pristine commercial LCO. In addition, compared production raw chemicals, healing-stabilizing strategy reduces total energy consumption 68.5%, bringing noteworthy economic environmental benefits. This work provides not only new understandings stabilize voltage, but also practical solution closed-loop development batteries.