Corresponding Author

Gui-Ling WANG(wangguiling@hrbeu.edu.cn)


The LiFePO4/C cathode materials for Li-ion battery were synthesized by sol-gel and calcining method using chitosan monomer as a carbon source and a gelating agent. The structures and morphologies were characterized by X-ray diffraction spectroscopy (XRD) and scanning electron microscopy (SEM). The electrochemical performance was investigated by the galvanostatic charge–discharge test. When the molar ratios between chitosan monomer and LiFePO4 were 1:1.2, the LiFePO4/C cathode calcined at 600 oC showed the best performance. The particle sizes ranged 200 ~ 400 nm. The initial discharge capacity of 155 mAh.g-1 was achieved at room temperature with discharge rate of 0.2C, while the capacity of 152 mAh.g-1 could be maintained after 30 charge-discharge cycles. The coulombic efficiency was 97.9%.

Graphical Abstract


chitosan, LiFePO4/C, sol-gel method, Li-ion battery

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