Spherical porous LiFePO4/C (LFP/C) composite materials were prepared by employing a solid-state (SS) method and a spray dry (SP) method. The surface modification was conducted on the spherical LFP/C composite using 1-5 wt.%Li4Ti5O12 (LTO) to improve the rate capability and the cycle stability properties at low temperature (0 degrees C) and elevated temperature (55 degrees C). The characteristic properties were examined through X-ray diffraction, micro-Raman spectroscopy, scanning electron microscopy, an AC impedance method, and galvanostatic charge-discharge method. The characteristic properties of the SS-LFP/C, SP-LFP/C, and LTO-coated SP-LPF/C composites were studied and compared. The 3 wt.%LTO-coated SP-LFP/C composite exhibited the most favorable performance among the samples. It exhibited discharge capacities of 150, 141, 131, 110, 103, and 84 mA h g(-1), at rates of 0.2 C, 0.5 C, 1 C, 3 C, 5 C, and 10 C, respectively. It was also found that the 3 wt.%LTO-coated SP-LFP/C composite shows the best cycling stability performance at elevated temperature of 55 degrees C. The LTO-coated SP-LFP/C composite was demonstrated to be suitable for high-temperature and high-power application in lithium-ion batteries. (C) 2015 Elsevier Ltd. All rights reserved.