کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
194464 | 459792 | 2007 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Structure and electrochemical properties of nanocarbon-coated Li3V2(PO4)3 prepared by sol–gel method Structure and electrochemical properties of nanocarbon-coated Li3V2(PO4)3 prepared by sol–gel method](/preview/png/194464.png)
A liquid-based sol–gel method was developed to synthesize nanocarbon-coated Li3V2(PO4)3. The products were characterized by XRD, SEM and electrochemical measurements. The results of Rietveld refinement analysis indicate that single-phase Li3V2(PO4)3 with monoclinic structure can be obtained in our experimental process. The discharge capacity of carbon-coated Li3V2(PO4)3 was 152.6 mAh/g at the 50th cycle under 1C rate, with 95.4% retention rate of initial capacity. A high discharge capacity of 184.1 mAh/g can be obtained under 0.12C rate, and a capacity of 140.0 mAh/g can still be held at 3C rate. The cyclic voltammetric measurements indicate that the electrode reaction reversibility is enhanced due to the carbon-coating. SEM images show that the reduced particle size and well-dispersed carbon-coating can be responsible for the good electrochemical performance obtained in our experiments.
Journal: Electrochimica Acta - Volume 52, Issue 16, 30 April 2007, Pages 5281–5285