Abstract
To suppress the capacity fade of Li-rich Li1.2Ni0.13Co0.13Mn0.54O2 material as cathode materials for lithium-ion battery, we introduce a LiF coating layer on the surface to improve the cycling performance of Li1.2Ni0.13Co0.13Mn0.54O2 material. The modified sample shows a capacity of 163.2 mAh g−1 with a capacity retention of 95% after 100 cycles at a current density of 250 mA g−1, while the pristine sample only delivers a capacity of 129.9 mAh g−1 with a capacity retention of 82%. Compared with the pristine material, the LiF-modified sample exhibits an obvious enhancement in the electrochemical performance, which will be very beneficial for this material to be commercialized on the new energy vehicles and other related areas.
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Funding
This work was supported by the National Basic Research Program of China (973 Program, No. 2014CB643406), National Science and Technology Support Program of China (No. 2015BAB06B00),the Innovation-Driven Project of Central South University (No. 2018CX006), and National Natural Science Foundation of China (No. 51674296).
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Du, Z., Peng, W., Wang, Z. et al. Improving the electrochemical performance of Li-rich Li1.2Ni0.13Co0.13Mn0.54O2 cathode material by LiF coating. Ionics 24, 3717–3724 (2018). https://doi.org/10.1007/s11581-018-2556-9
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DOI: https://doi.org/10.1007/s11581-018-2556-9