In-situ prepare carbon coating LMFP cathode with high cyclic stability by CFx and glucose co-modification

In this work, CFx and glucose were used as carbon sources to construct carbon-coated LiMn0.6Fe0.4PO4. On the basis of LiMn0.6Fe0.4PO4/C, a small amount of CFx was introduced, which generated LiF and C during the first charge/discharge process, thus completing the in-situ carbon coating of LiMn0.6Fe0.4PO4/C. The modification greatly reduced side reactions on the surface, alleviated the erosion of HF, and further improved the cycle stability and rate performance of the batteries. The discharge specific capacity reached 164.8 mAh·g−1 at 0.1C, and the discharge specific capacity still maintained above 115.0 mAh·g−1 at 5C, and the capacity reserved 96.5% after 200 cycles at 0.5C. This scheme provides a new direction and a better way for the subsequent research of lithium-ion battery materials with high cycle stability.