Abstract
LiMnPO4/C composites were synthesized via solid-state reaction with different carbon sources: sucrose, citric acid and oxalic acid. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical performance test. The results of XRD reveal that carbon coating has no effect on the phase of LiMnPO4. The LiMnPO4/C synthesized at 600 °C with citric acid as carbon source shows an initial discharge capacity of 117.8 mAh·g−1 at 0.05 C rate. After 30 cycles, the capacity remains 98.2 mAh·g−1. The improved electrochemical properties of LiMnPO4/C is attributed to the decomposition of organic acid during the sintering process.
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References
Morgan D., Van A.D.V., and Ceder G., Li conductivity in LixMPO4 (M=Mn, Fe, Co, Ni) olivine materials, Eletrochem. Solid-State Lett., 2004, 7(11): 30.
Ouyang C.Y., Shi S.Q., Wang Z.X., Huang X.J., and Chen L.Q., First-principles study of Li ion diffusion in LiFePO4, Phys. Rev., 2004, 69(10): 104303.
Islam M.S., Driscoll D.J., Fisher C.A.J., and Slater P.R., Atomic-scale investigation of defects, dopants, and lithium transport in the LiFePO4 olivine-type battery material, Chem. Mater., 2005, 17(20): 5085.
Yonemura M., Yamada A., Takei Y., Sonoyama N., and Kanno R., Comparative kinetic study of olivine LixMPO4 (M = Fe, Mn), J. Electrochem. Soc., 2004, 151(9): 1352.
Fang H.S., Pan Z.Y., Li L.P., Yang Y., Yan G.F., Li G.S., and Wei S.Q., The possibility of manganese disorder in LiMnPO4 and its effect on the electrochemical activity, Electrochem. Commun., 2008, 10(7): 1071.
Yamada A., Kudo Y., and Liu K.Y., Optimized LiFePO4 for lithium battery cathodes, J. Electrochem. Soc., 2001, 148(3): 1153.
Wang Y.R., Yang Y.F., Yang Y.B., and Shao H.X., Enhanced electrochemical performance of unique morphological cathode material prepared by solvothermal method, Solid State Commun., 2010, 150(1–2): 81.
Kwon N.-H., Drezen T., Exnar I., Teerlinck I., Isono M., and Grätzel M., Enhanced electrochemical performance of mesoparticulate LiMnPO4 for lithium ion batteries, Electrochem. Solid-State Lett., 2006, 9(6): 277.
Delacourt C., Laffont L., Bouchet R., Wurm C., Leriche J.-B., Morcrette M., Tarascon J.-M., and Masquelier C., Size effects on carbon-free LiFePO4 powders, J. Electrochem. Soc., 2005, 152(7): 913.
Herle P.S., Ellis B., Coombs N., and Nazar L.F., Nano-network electronic conduction in iron and nickel olivine phosphates, Nat. Mater., 2004, 3: 147.
Liu M.Z., Guo X.Y., Synthesis and performance of Li3V2-(PO4)3/C composites as cathode materials, Rare Metals., 2008, 27(6): 571.
Huang H., Yin S.C., and Nazar L.F., Approaching theoretical capacity of LiFePO4 at room temperature at high rates, Eletrochem. Solid-State Lett., 2001, 4(10): 170.
Murugan A.V., Muraliganth T., and Manthiram A., One-pot microwave-hydrothermal synthesis and characterization of carbon-coated LiMPO4 (M= Mn, Fe, and Co) cathodes, J. Electrochem. Soc., 2009, 156(2): 79.
Zhang Y., Sun C.S., and Zhou Z., Sol-gel preparation and electrochemical performances of LiFe1/3Mn1/3Co1/3PO4/C composites with core-shell nanostructure, Electrochem. Commun., 2009, 11(2): 1183.
Mi C.H., Zhao X.B., Cao G.S., and Tu J.P., J. In situ synthesis and properties of carbon-coated LiFePO4 as Li-ion battery cathodes, Electrochem. Soc., 2005, 152(3): 483.
Myung S.T., Komaba S., Hirosaki N., Yashiro H., and Kumagai N., Hydrothermal synthesis of layered Li[Ni1/3Co1/3Mn1/3]O2 as positive electrode material for lithium secondary battery. Electrochim. Acta, 2005, 49(24): 4213.
Huang H., Yin S.C., and Nazar L.F., Approaching theoretical capacity of LiFePO4 at room temperature at high rates, Electrochem. Solid-State Lett., 2001, 4(10): 170.
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Zhong, S., Xu, Y., Li, Y. et al. Synthesis and electrochemical performance of LiMnPO4/C composites cathode materials. Rare Metals 31, 474–478 (2012). https://doi.org/10.1007/s12598-012-0542-3
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DOI: https://doi.org/10.1007/s12598-012-0542-3