Synthesis and Electrochemical Performance of Nano LiCoPO₄ by Polyol Method

Authors

Fei WANG, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
YANG Jun, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaFollow

Corresponding Author

YANG Jun(yangj723@sjtu.edu.cn)

Abstract

High potential LiCoPO₄ cathode material was synthesized by polyol method. Carbon layer of ca. 3 nm thick was coated on the LiCoPO4 surfaces by chemical vapor deposition from methylbenzene. Crystalline structure, morphology and electrochemical performance of the sample were studied by XRD, SEM, TEM, CV and galvanostatic charge/discharge curve. The synthesized material via polyol method showed a pure phase of LiCoPO₄. The LiCoPO₄/C electrode delivered a high discharge capacity of 132 mAh·g^-1 and maintained 78% of the initial capacity after 50 cycles at 0.1C rate. The two-step extraction/insertion behavior of Li⁺ in LiCoPO4/C was observed from cyclic voltammogram and differential capacitance curves.

Graphical Abstract

Keywords

polyol method, LiCoPO4, chemical vapor deposition, carbon coating

DOI Link

https://doi.org/10.13208/j.electrochem.130355

Publication Date

2013-12-28

Online Available Date

2013-12-23

Revised Date

2013-05-25

Received Date

2013-05-08

Recommended Citation

Fei WANG, YANG Jun. Synthesis and Electrochemical Performance of Nano LiCoPO₄ by Polyol Method[J]. Journal of Electrochemistry, 2013 , 19(6): 130355.
DOI: 10.13208/j.electrochem.130355
Available at: https://jelectrochem.xmu.edu.cn/journal/vol19/iss6/15