Abstract
The monoclinic Li3V2(PO4)3 cathode materials were prepared by carbothermal reduction method,with methyl cellulose,chitosan(crab shells) or glucose anhydrous as carbon sources,respectively.The crystal structures,morphologies and the electrochemical performances were characterized by XRD,SEM and electrochemical measurement.The XRD patterns show that the samples obtained at 800 ℃ for 6 h have a pure monoclinic structure,which indicates that the carbon exists in amorphous phase.Electrochemical measurements show that the difference of carbon sources has a significant influence on the electrochemical properties of the materials.The Li3V2(PO4)3 /C with methyl cellulose as the reduction agent has the best electrochemical performance.In the voltage range of 3.0 ～ 4.5 V and at 0.2 C(1 C = 140 mAh·g-1),the initial discharge specific capacity reached 130.6 mAh·g-1,and maintained 108 mAh·g-1 after 30 cycles,even after 50 cycles at 1 C,the specific capacity were still more than 90 mAh·g-1.
Keywords
Li3V2(PO4)3, cathode materials, carbon sources
Publication Date
2010-02-28
Online Available Date
2010-02-28
Revised Date
2010-02-28
Received Date
2010-02-28
Recommended Citation
Kai-yuan LIU, Jian-shu HUANG, Li YANG.
Effects of Different Carbon Sources on Performance of Li_3V_2(PO_4)_3/C Composite Cathode Materials[J]. Journal of Electrochemistry,
2010
,
16(1): 30-34.
DOI: 10.61558/2993-074X.2032
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol16/iss1/6
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