Corresponding Author

Ying-jin WEI


The carbon-coated Li3V2(PO4)3 was prepared by carbothermal reduction method.The structural and morphological properties of the material were studied by X-ray diffraction,FTIR and transmission electron microscopy.The synthesized material was a pure phase of Li3V2(PO4)3,with the particle size of about 100 nm.The values of Li ion diffusion coefficient of the material in the potential window of 3.0 ~ 4.3 V were nearly 3 orders larger than those in 3.0 ~ 4.8 V.In addition,the charge-transfer resistances in 3.0 ~ 4.3 V were much smaller than those in 3.0 ~ 4.8 V,leading to apparent improvement in cycling performance.This was mainly attributed to the smaller charge transfer resistance and higher Li + diffusion coefficients in the narrower potential window.


lithium-ion batteries, cathode materials Li3V2(PO4)3, electrochemical properties

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