Abstract
Li2FeSiO4/C has been prepared by the ultrasonic-assisted sol–gel method with about 50nm Fe2O3 particle as Fe source. The structures, morphologies, and carbon content of the product are characterized. Li2FeSiO4/C owns pure phase and the particle size of Li2FeSiO4 is close to Fe2O3 nanoparticle. As the cathode material of Li-ion battery, the product shows stable cycle performance at the wide range of rate and good rate performance. The discharge capacities of the 100th cycle are 140mAhg−1, 125mAhg−1, 120mAhg−1, 110mAhg−1, and 90mAhg−1 at 0.1C, 0.5C, 1C, 2C, and 5C rate, respectively.
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