The Synthesis of LiMnxFe1−xPO4/C Cathode Material through Solvothermal Jointed with Solid-State Reaction
نویسندگان
چکیده
LiMnxFe1-xPO₄/C material has been synthesized through a facile solid-state reaction under the condition of carbon coating, using solvothermal-prepared LiMnPO₄ and LiFePO₄ as precursors and sucrose as a carbon resource. XRD and element distribution analysis reveal completed solid-state reaction of precursors. LiMnxFe1-xPO₄/C composites inherit the morphology of precursors after heat treatment without obvious agglomeration and size increase. LiMnxFe1-xPO₄ solid solution forms at low temperature around 350 °C, and Mn2+/Fe2+ diffuse completely within 1 h at 650 °C. The LiMnxFe1-xPO₄/C (x < 0.8) composite exhibits a high-discharge capacity of over 120 mAh·g-1 (500 Wh·kg-1) at low C-rates. This paves a way to synthesize the crystal-optimized LiMnxFe1-xPO₄/C materials for high performance Li-ion batteries.
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