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
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	Lithium-ion battery LiCoO2 Heterogeneous co-doping Core–shell structure High-voltage stability Technology
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
Externí odkaz:	https://doaj.org/article/9d127b4bab164225a8a97e6e935ca76e Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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