Mitigating Lattice Distortion of High-Voltage LiCoO2 via Core-Shell Structure Induced by Cationic Heterogeneous Co-Doping for Lithium-Ion Batteries
Autor: | Zezhou Lin, Ke Fan, Tiancheng Liu, Zhihang Xu, Gao Chen, Honglei Zhang, Hao Li, Xuyun Guo, Xi Zhang, Ye Zhu, Peiyu Hou, Haitao Huang |
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Jazyk: | angličtina |
Rok vydání: | 2023 |
Předmět: | |
Zdroj: | Nano-Micro Letters, Vol 16, Iss 1, Pp 1-14 (2023) |
Druh dokumentu: | article |
ISSN: | 2311-6706 2150-5551 |
DOI: | 10.1007/s40820-023-01269-1 |
Popis: | Highlights A simple two-step multi-element co-doping strategy is proposed to fabricate core-shell structured LiCoO2 based on the different diffusivities of dopant ions. The high diffusivity Al3+/Mg2+ ions occupy the core of single-crystal grain while the low diffusivity Ti4+ ions enrich the shell layer. In-situ XRD demonstrates the mitigated structural distortion under a high cut-off voltage of 4.6 V, resulting in a significantly improved cycling stability. |
Databáze: | Directory of Open Access Journals |
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