Preparation and Properties of High Capacity LiFePO_4

Authors

Jun LI, School of Chemical Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong,China,;Guangzhou Penghui Battery Ltd.,Guangzhou 511483,Guangdong,China;
Gui-tang LAI, School of Chemical Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong,China,;
Hui-min HUANG, School of Chemical Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong,China,;
Da-guang LI, School of Chemical Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong,China,;
Xin-de XIA, Guangzhou Penghui Battery Ltd.,Guangzhou 511483,Guangdong,China;

Abstract

Carbon-doped LiFePO4/C and pure phase LiFePO4 cathode materials were prepared by liquid-state precipitation reaction.The results of XRD,SEM,elemental analysis,FTIR and A.C.impedance tests show that the samples have had olivine structure and a 3.4V discharge platform.The tapped density of LiFePO4/C sample could reach 1.46g/cm3,the initiate discharge capacity is 144.6mAh/g at 0.1C,which remained capacity is 93.2% after 20 cycles.The first discharge capacity is 133.5mAh/g at 1C and the capacity decreased 8.76% after 20 cycles.

Keywords

lithium ion battery, cathode materials, lithium iron phosphate, high capacity

DOI Link

https://doi.org/10.61558/2993-074X.1842

Publication Date

2007-11-28

Online Available Date

2007-11-28

Revised Date

2007-11-28

Received Date

2007-11-28

Recommended Citation

Jun LI, Gui-tang LAI, Hui-min HUANG, Da-guang LI, Xin-de XIA. Preparation and Properties of High Capacity LiFePO_4[J]. Journal of Electrochemistry, 2007 , 13(4): 403-406.
DOI: 10.61558/2993-074X.1842
Available at: https://jelectrochem.xmu.edu.cn/journal/vol13/iss4/9