One-pot synthesis of Li₂FePO₄F nanoparticles via a supercritical fluid process and characterization for application in lithium-ion batteries

For the first time, we are reporting the one-pot synthesis of Li ₂FePO₄F nanoparticles; the synthesis is carried out via a supercritical fluid process at 400 °C for 10-30 min. The as-synthesized nanoparticles show 5-10 nm and 80-150 nm sizes depending on the reaction time. The carbon coated Li₂FePO₄F nanoparticles show a discharge capacity of 100 and 148 mA h g^-1 at room and elevated temperature (50 °C), respectively.