Dr. Tong Zhang Profile

Dr. Tong Zhang

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Proceedings Article | 6 February 2024 Paper

Preparation and electrochemical properties of Ce doped lithium-rich manganese oxygen cathode materials for lithium-ion battery

Bozhong Cao, Tong Zhang, Wenjian Li, Qingsen Zhong, Lei Ling, Jincheng Zhang, Yusheng Lu, Xiaofei Bian

Proceedings Volume 12979, 129790Q (2024) https://doi.org/10.1117/12.3015251

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Li_1.18Ni_0.15Co_0.15Mn_0.52O₂, a lithium-rich manganese oxygen cathode material , was successfully generated with the sol-gel methods, then we modified it using Ce4+ and obtained a new Li_1.18Ni_0.15Co_0.15Mn_0.52-xCexO₂(x=0, 0.01) material. scanning electron microscopy (SEM) and X-ray diffraction (XRD) testing were used to analysis the materials, and electrochemical properties were explored by constant current charge/discharge and cyclic voltammetry (CV) tests. Test results showed that cerium-doped cathode material maintained its lamellar structure without significant changes in microscopic morphology. It was also found that the capacity retention rate of the doped materials was 89% after 50 cycles at 0.2C, while that of the undoped materials were 77%. In addition, the discharge capacity of the doped materials at 0.2, 0.5, 1, 2.5, 5 and 10C is higher than that of the undoped materials. The above results show that Ce⁴⁺ doping can improve the Electrochemical performance of Li-rich Mn-based cathode materials .

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