Patent ID: 8114469

Claim:
A process for synthesizing, under an atmosphere of air, particles of an oxide corresponding to a formula selected from: Li 4 Ti 5 O 12 ; Li (4-α) Z α Ti 5 O 12 , wherein α represents a number greater than zero and less than or equal to 0.33, and Z represents at least one metal; and Li 4 Z β Ti (5-β) O 12 , wherein β represents a number greater than zero and less than or equal to 0.5, and Z represents at least one metal, said particles having carbon coating with a thickness in a range of 10-450 nm, said process comprising the steps of: a) intimately dispersing ternary mixture of TiOx-LizY-carbon, wherein x is a number between 1 and 2, z is 1 or 2, Y is a radical chosen from the group consisting of CO 3 , OH, O and TiO 3 or a mixture thereof, and the carbon is a carbon powder selected from the group consisting of natural or artificial graphite, carbon black, Shawinigan black, Ketjen black and cokes; b) heating the dispersion at a temperature of between 400 and 1,000° C.; and c) if appropriate, adding a source of at least one metal Z to the ternary mixture, wherein the operating conditions are chosen in such a way as to yield a conversion of the initial products respectively into Li 4 Ti 5 O 12 , Li (4-α) Z α Ti 5 O 12 , Li 4 Z β Ti (5-β) O 12 .