| 论文标题 |
High reversibility of layered oxide cathode enabled by direct Re-generation |
| 作者 |
Yaqing Guo, Xiaobin Liao, Pengjie Huang, Ping Lou, Yaqiong Su, Xufeng Hong, Qigao Han, Ruohan Yu, Yuan-Cheng Cao, Shijie Chen |
| 发表/完成日期 |
2021-12-01 |
| 期刊名称 |
Energy Storage Materials |
| 期卷 |
43 |
| 相关文章 |
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| 论文简介 |
Recently, lithium-ion batteries (LIBs) play an increasingly important role in daily life, and recycle of LIBs material has also become a hotspot. Herein, the degradation mechanisms of layered transition metal oxide, LiNi0.5Co0.2Mn0.3O2 (NCM523) single crystal particles, are comprehensively investigated by the atomic analysis and simulations of Aberration-corrected scanning transmission electron microscope (STEM) and Density Functional Theory (DFT). Based on understanding the degradation mechanisms, a direct regeneration technology is adopted to recover the degraded cathode materials (≈ 10% capacity retains) by hydrothermal treatment combined with a solid-state eutectic Li+ molten-salt solutions sintering step. The regenerated cathodes present a layered crystalline structure in the whole phase region and the capacity of pouch cell (1.7 Ah) remains 90.8% after 500 cycles with the mass loading of … |
(创新港)
