Abstract
The LiFePO4/MWCNTs composite was synthesized by ball milling,then the composite electrode was assembled into button lithium-ion batteries.The structure and morphology of the samples,the electrochemical performance of the electrodes were investigated by ways of X-ray diffraction,scanning electron microscopy,cyclic voltammetry and charge-discharge capacity tests. The electrochemical performance of the composite electrodes with different MWNTs contents were studied. The results indicated that the composite electrode containing 10% MWCNTs(by mass)exhibited the most excellent electrochemical performance with the initial charge-discharge capacities of 139 mAh·g-1,128.5 mAh·g-1,respectively,and a Kulun efficiency of 92.4% at 0.1C rate under room temperature.Compared to the electrodes with the different MWCNTs contents,it had the longest and steadiest charge-discharge platform,at the same time,it had the lowest polarization,keeping 94.7% of the initial capacity over 40 cycles.
Keywords
ball milling, LiFePO4/MWCNTs, electrochemical performance
Publication Date
2009-08-28
Online Available Date
2009-08-28
Revised Date
2009-08-28
Received Date
2009-08-28
Recommended Citation
You-yi PENG, Hai-yan ZHANG, Chun-hua HE, Wei XIE, Zhi-feng ZENG.
A Study On the LiFePO_4/MWCNTs Cathode Materials for Li-ion Batteries[J]. Journal of Electrochemistry,
2009
,
15(3): 331-335.
DOI: 10.61558/2993-074X.2005
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol15/iss3/19
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons, Power and Energy Commons
