Fast Microwave Synthesis Lithium Vanadium Phosphate Using Peg as a Novel Carbon Source

The Li3V2(PO4)3/C cathode material is prepared by fast microwave synthesis route using PEG as carbon source. The samples were characterized by X-ray diffraction (XRD), galvanostatically charge/discharge test and electrochemical impedance spectroscopy (EIS). XRD result shows that the material was well crystallized and the structure was indexed as a monoclinic Li3V2(PO4)3/C. The electrochemical tests of material exhibit good cycling performance, which delivered a high initial discharge of 125.2 mAh g-1 at 0.2C and the retention of capacity was 92.4% after 50 cycles. From this study, the PEG-based microwave preparation method is regarded as a feasible route for the preparation of Li3V2(PO4)3/C cathode material.

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Preparation of Li3V2(PO4)3/C Cathode Material Enhance Performance for Lithium Ion Batteries

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.550-553.2055 ◽

2012 ◽

Vol 550-553 ◽

pp. 2055-2058

Author(s):

Zhe Wang ◽

Yan Li Ruan ◽

Ping Ping Qi ◽

Meng Liang Qian

Keyword(s):

High Temperature ◽

Solid State ◽

Carbon Source ◽

Raw Materials ◽

Lithium Ion ◽

Lithium Vanadium Phosphate ◽

Phase Reaction ◽

Vanadium Phosphate ◽

Flow Phase ◽

First Time

Due to the high stability and potential characteristics to the economical and environmental, the Li3V2(PO4)3increased the global concern on the polyanionic materials. In this work, we using Li2CO3, V2O5, NH4H2PO4 and PEG as raw materials to compared the flow phase reaction and high temperature solid state synthesis of lithium vanadium phosphate composites. The results of this study can be considered in making decision which conditions of achieved precipitation of carbon source can be efficiently applied in a real Electrochemical performance manufactory. The obtained results indicated that using Glucose as carbon source, and calcined at 800 °C, 0.1C rate current conditions, high temperature solid state sintering of lithium vanadium phosphate composites for the first time following a discharge capacity of 119.31mAh/g, which has a good reusability performance.

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β-Cyclodextrin coated lithium vanadium phosphate as novel cathode material for lithium ion batteries

RSC Advances ◽

10.1039/c6ra22400h ◽

2016 ◽

Vol 6 (105) ◽

pp. 103364-103371 ◽

Cited By ~ 4

Author(s):

Renjie Chen ◽

Jingning Lai ◽

Yuejiao Li ◽

Meiling Cao ◽

Shi Chen ◽

...

Keyword(s):

Carbon Source ◽

Cathode Material ◽

Lithium Ion Batteries ◽

High Capacity ◽

Lithium Ion ◽

Lithium Vanadium Phosphate ◽

Phase Method ◽

Rate Performance ◽

Cycle Stability ◽

Vanadium Phosphate

As a new carbon source, β-cyclodextrin was used to synthesize a Li3V2(PO4)3/C cathode material for LIB via a rheological phase method. The sample showed high capacity, good rate performance and cycle stability, and low resistance.

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