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LiMn2O4/Li4Ti5O12 composite was synthesized by in-situ composite technique using LiMn2O4, lithium acetate, tetrabutyl titanate as starting materials and were characterized by various electrochemical methods in combination with X-ray diffraction (XRD), infrared (IR) spectroscopy and scanning electron microscope (SEM).Results show that the amorphous Li4Ti5Ol2 is coated on the surface of crystalline LiMn2O4 to form the LiMn2O4/Li4Ti5O12 composite.