Microwave Assisted Solid State Synthesis of LiFePO₄/C Using Two Different Carbon Sources

摘要

Nano size particles LiFePO4/C were prepared by a fast, facile, and environmentally friendlymicrowave-assisted solid-state reaction using different organic carbon sources. The particles are veryuniform and are 10000nm in size. The effects of the carbon sources on the microstructure andelectrochemical properties of LiFePO4/C nanoparticles were investigated by X-ray diffraction,scanning electron microscopy, field emission scanning electron microscopy, electrochemicalmeasurements and cyclic voltammetry. The results showed that the LiFePO4/C nanoparticles preparedfrom sucrose as carbon source, has good crystallinity and higher percentage of graphitic carbon,-1 provided an initial discharge capacity of are 145.6, 140.5 and 122.4 mAhg at 0.1.5 and 1.0Crespectively, with excellent capacity retention. These advantages, coupled with the simple andeffective preparation method, render LiFePO4/C nanoparticles attractive for practical and large-scaleapplications.