Synthesized Fe-doping Li3V2(PO4)3/C cathode material from combustion synthesis precursors with enhanced electrochemical performance
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Fe-doping Li3V2(PO4)3/C material was successfully synthesized from combustion synthesis precursors. The Li3V2(PO4)3 is layered by amorphous carbon with a porous structure and doped with Fe, which can improve the Li+ transfer rate and conductivity. The 1% Fe-doped products used as cathode electrode for lithium-ion batteries exhibit enhanced electrochemical performance. In 3.0~4.8 V, it has a specific discharge capacity of 180 mAh g−1 after 20 cycles at 0.1 C, 142.5 mAh g−1 after 500 cycles at 1 C, and 132.5 mAh g−1 after 500 cycles at 10 C. Moreover, it shows stabilized specific discharge capacity of 65.9 mAh g−1 after 500 cycles at a rate of 20 C, and the capacity retention is 98%. Thus, it could infer the Fe-doping Li3V2(PO4)3/C material is a permission candidated material for application in lithium-ion batteries with high performance.
KeywordsSolution combustion synthesis Li3V2(PO4)3 Cathode Electrochemical performance
This work was supported by the Applied Basic Research Programs of Sichuan Province (no. 2018JY0130, no. 2019JY0684) and the Applied Basic Research Programs of Panzhihua (no. 2018CY-G-11).
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