Nanostructured Li[sub 2]FeSiO[sub 4] Electrode Material Synthesized through Hydrothermal-Assisted Sol-Gel Process

A carbon-coated material with uniform nanoparticles (approximately in diameter) is synthesized by a synthesis route, i.e., a hydrothermal-assisted sol-gel process. As an electrode material for rechargeable lithium batteries, the sample shows high rate capability and excellent capacity retention. The electrode delivers a discharge capacity of at C/16 rate, corresponding to 96% of the theoretical value. A discharge capacity of about 91 and can be obtained at 5 and rate, respectively. No capacity loss can be observed up to 50 cycles.