Synthesis of the Lithium-ion Cell Material Li_4Ti_5O_(12)

The precursor Li4Ti5(OEt)(24-n)(acac)n of the nano-oxide Li4Ti5O12 was prepared,by electrochemical dissolution of itanium for 6h at the current of 0.2A in the ethanol and acetyl-acetone solution of Li alkoxide. The xerogel was prepared by a direct ol-gel process of the electrolyte solution under pH≈8.5 followed by washing and drying for 24h, which was heated at 600 ℃ for 2h obtain the nano-Li4Ti5O12 powder. The products were characterized by FT-IR spectrum, TEM. The experiments turn out that the erogel powder made from the precursor has a narrow size distribution of 10~15nm and the nano-Li4Ti5O12 of 15~20 nm was thus btained.