Sb-Doped high-voltage LiCoO2 enabled improved structural stability and rate capability for high-performance Li-ion batteries

Cong Chen; Tianyu Li; Xiaofei Yang; Chao Qu; Yang Luo; Yuxiao Wang; Huamin Zhang; Hongzhang Zhang; Xianfeng Li

doi:10.1039/D2CC01152B

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Sb-Doped high-voltage LiCoO₂ enabled improved structural stability and rate capability for high-performance Li-ion batteries†

Cong Chen,^ab Tianyu Li,

^a Xiaofei Yang,

^a Chao Qu,^a Yang Luo,^a Yuxiao Wang,^ab Huamin Zhang,

^a Hongzhang Zhang

*^a and Xianfeng Li

*^a

Author affiliations

* Corresponding authors

^a Division of Energy Storage, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, China
E-mail: zhanghz@dicp.ac.cn, lixianfeng@dicp.ac.cn

^b University of Chinese Academy of Sciences, Beijing, China

Abstract

Sb-Doped high-voltage LiCoO₂ was developed with unique properties. In situ X-ray diffraction and density functional theory reveal that the introduction of Sb helps to shorten the Li⁺ diffusion distance, increase the lattice spacing and keep the structural stability during deep lithiation, thus resulting in improved rate capability and cycling performance.

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Article information

DOI: https://doi.org/10.1039/D2CC01152B
Article type: Communication
Submitted: 26 Feb 2022
Accepted: 30 Mar 2022
First published: 31 Mar 2022

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Chem. Commun., 2022,58, 5379-5382

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Sb-Doped high-voltage LiCoO₂ enabled improved structural stability and rate capability for high-performance Li-ion batteries

C. Chen, T. Li, X. Yang, C. Qu, Y. Luo, Y. Wang, H. Zhang, H. Zhang and X. Li, Chem. Commun., 2022, 58, 5379 DOI: 10.1039/D2CC01152B

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Chemical Communications