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Study on Mo6+ doping into Li1.20Mn0.54Ni0.13Co0.13O2 as cathode materials for Li-ion batteries applied in unmanned aerial vehicles
Received date: 2020-06-25
Online published: 2021-11-15
A certain content of Mo6+ was doped into the Li1.20Mn0.54Ni0.13Co0.13O2 cathode materials via using the carbonate co-precipitation method and high temperature calcination process.The influences of doping Mo6+ on crystal structure, morphology and electrochemical properties of the cathode materials were investigated by XRD, SEM, EDS and galvanostatic charge-discharge tests.The results showed that the Li1.20Mn0.52Ni0.13Co0.13Mo0.02O2 exhibited lower cation mixing and excellent electro-chemical properties.Due to the high migration rate of Li+, the first irreversible capacity loss of the Mo6+ doped cathode was reduced, which led to better high rate performance and excellent cycle stability.After 100 cycles at 0.5C, the capacity retention rate of Li1.20Mn0.52Ni0.13Co0.13Mo0.02O2 was 92.2%, which was much higher than that of Li1.20Mn0.54Ni0.13Co0.13O2（87.5%）. In addition, when the discharge rate increased to 5C the discharge capacity of Li1.20Mn0.54Ni0.13Co0.13O2 was 21.0 mA·h/g lower than that of Li1.20Mn0.52Ni0.13Co0.13Mo0.02O2.Therefore, using Mo6+ doping Li1.20Mn0.54Ni0.13Co0.13O2 cathode materials could effectively improve the cycle retention and high rate discharge performance of lithium-ion battery.
Yafeng ZHANG , Hongwei LI , Zhijian ZHAO . Study on Mo6+ doping into Li1.20Mn0.54Ni0.13Co0.13O2 as cathode materials for Li-ion batteries applied in unmanned aerial vehicles[J]. Inorganic Chemicals Industry, 2021 , 53(11) : 81 -85 . DOI: 10.19964/j.issn.1006-4990.2020-0365
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