Patent ID: 8475960

Claim:
A method of production of an anode material for lithium-ion electrochemical cells, comprising: providing initial components comprising lithium and titanium and introducing sources of dopants chromium and vanadium resulting in a prepared mixture; homogenizing and pulverizing the prepared mixture to obtain particles no greater than 0.5 μm in size; heat treating the prepared mixture stepwise in a controlled atmosphere of argon and acetylene while regulating the volume ratio of gases in the argon-acetylene stream from 999:1 to 750:250, respectively, according to the following procedure: at a first stage heating the prepared mixture to a temperature no higher than 350° C.; at a second stage continuing the heating in the 350-750° C. temperature interval at a rate no greater than 10° C./min to provide for solid-phase interaction of the prepared mixture; at a third stage increasing the temperature from a range 840-850° C. and holding the prepared mixture resulting in the anode material at that temperature for no less than 1 hour; at a fourth stage decreasing the temperature to one from a range 520-580° C. at a rate no greater than 5° C./min, and holding the anode material at that temperature for no less than 2 hours; at a final stage blowing the anode material through with pure argon during cooling to a temperature from a range 40-60° C. and packaging the anode material.