Abstract
This work reported a solid-state method to prepare LiFePO4/C composite cathode materials by using chitosan and polystyrene sphere (denoted as PSS) as templates. The characteristic properties of the composite cathode materials were examined by micro-Raman spectroscopy, XRD, SEM, EA, CV and EIS. The CR 2032 coin cell was used to investigate the electrochemical performance at various rates. It was found that the specific discharge capacity of LiFePO4/C composite cathode materials with chitosan template and PSS template were 141 and 146 mAh g-1 at 0.1C rate, respectively. However, the specific discharge capacities of LiFePO4/C composite cathode materials with 10%PSS template were 143, 140, 134, 113, 106 and 88 mAh g-1 at 0.2, 0.5, 1, 3, 5 and 10C rates, respectively. The results also showed that the current efficiency is ca. 95-98%. In summary, the as-prepared LiFePO4/C composite material by using polymer template can be a good candidate for Li ion battery applications.
Published Version
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