The Synthesis,Structure and Electrochemical Performances of Lithium Iron Phosphate

Authors

Hui XIE, 1,2*),ZHOU Zhen-tao~2(1.Department of Chemistry and Biology,Zhongshan Institute,University of Electronic Science & Technology of China,Zhongshan 528402,Guangdong,China,2.College of Material Science & Engineering,South-China University of Technology,Guangzhou 510640,Guangdong,China;

Abstract

The lithium iron phosphate cathode materials were synthesized by solid-state reaction combined high-rate ball milling under the temperature ranging from 400 ℃ to 700 ℃.The crystalline structure,morphology of particles,and electrochemical performance of the sample were investigated by X-ray diffraction,scanning electron microscopy and charge-discharge test.The results showed that the sintering temperature had great influences on the crystal structure,morphology and electrochemical performances of LiFePO_(4).The sample synthesized under 600℃ showed the best charge-discharge performances with the first specific discharge capacity of(128.8) mAh/g and the 15~(th) specific discharge capacity of 129.1 mAh/g at 0.1C rate,each charge-discharge cycling efficiency being 99.7%.Also the sample showed good electrochemical performances under higher temperatures.

Keywords

Lithium-ion batteries, Cathode material, Lithium iron phosphate, High temperature performances

DOI Link

https://doi.org/10.61558/2993-074X.1756

Publication Date

2006-11-28

Online Available Date

2006-11-28

Revised Date

2006-11-28

Received Date

2006-11-28

Recommended Citation

Hui XIE. The Synthesis,Structure and Electrochemical Performances of Lithium Iron Phosphate[J]. Journal of Electrochemistry, 2006 , 12(4): 378-381.
DOI: 10.61558/2993-074X.1756
Available at: https://jelectrochem.xmu.edu.cn/journal/vol12/iss4/5

References

[1]CHEN L i-quan(陈立泉).Research progress in cathodem aterials of L i-ion battery[J].Battery B imonthly(inCh inese),2002,32(1):6~8.
[2]Song Myoung Youp,Lee Ryong.Synthesis by sol gelm ethod and electrochem ical properties of L iN iO2cathodem aterial for lith ium secondary battery[J].J.PowerSources,2002,111(1):97~103.
[3]ZHOU Zhen-tao(周震涛),LI X in-sheng(李新生).Stud ies on lith ium m anganese oxide prepared from m elt-impregnation m ethod[J].Rare M etalM aterial and En-gineering(in Ch inese),2003,32(2):134~136.
[4]Andersson Anna S,Thom as John O,Kalska Beata,etal.Therm al stab ility of L iFePO4-based cathodes[J].E lectrochem ical and Solid-state Letters,2000,3(2):66~68.
[5]Prosin i P ier Paolo,Carewska M aria,Scacc ia S ilvera,etal.A new synthetic route for preparing L iMnPO4w ithenhanced electrochem ical perform ance[J].J.E lectro-chem.Soc.,2002,149(7):A886~890.