Synthesis of LiFePO₄/C Cathode by Sol-gel and Calcining Method with Chitosan Monomer

Authors

Jia XU, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;
Yan-Yan WANG, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;
Rui WANG, Harbin Pharm. Group Sanjing Pharmaceutical Shareholding Co., Ltd, Harbin 150069, China;
Bo WANG, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;
Yue PAN, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;
Dian-Xue CAO, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;
Gui-Ling WANG, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;Follow

Corresponding Author

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

Abstract

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

Keywords

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

DOI Link

https://doi.org/10.61558/2993-074X.2112

Publication Date

2013-04-28

Online Available Date

2012-02-21

Revised Date

2012-02-11

Received Date

2012-01-05

Recommended Citation

Jia XU, Yan-Yan WANG, Rui WANG, Bo WANG, Yue PAN, Dian-Xue CAO, Gui-Ling WANG. Synthesis of LiFePO₄/C Cathode by Sol-gel and Calcining Method with Chitosan Monomer[J]. Journal of Electrochemistry, 2013 , 19(2): 189-192.
DOI: 10.61558/2993-074X.2112
Available at: https://jelectrochem.xmu.edu.cn/journal/vol19/iss2/10