LiFePO4/C materials added with different carbon sources were synthesized via simple one-step sintering process, and the carbon sources were lauric acid, citric acid, or sucrose. LiFePO4/C materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical performance varied considerably depending on diverse carbon sources. The results indicate that LiFePO4 sample added with lauric acid has better electrochemical performance, and its first discharge specific capacity is 161.6 mAh g-1 at 0.2 C. And at 5 C, 10 C, 20 C, the initial discharge specific capacity is 137.5 mAh g-1, 122.2 mAh g-1 and 126.7 mAh g-1, respectively, which shows higher reversible capacity among the as-prepared materials. It shows great potential for the applications in large-scale device. While the sucrose additive has an adverse effect on the discharge capacity of LiFePO4, citric acid lowers LiFePO4’s discharge capacity much more.
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