METHOD FOR SYNTHESIS OF HIGH CAPACITY LixMn2O4 SECONDARY BATTERY ELECTRODE COMPOUNDS

摘要

Lithium intercalation compounds suitable for use in high capacity secondary battery electrodes are prepared by reacting together at a temperature in the range of about 800 DEG to 900 DEG C. lithium and manganese compounds in a stoichiometric ratio resulting in a LixMn2O4 compound wherein x is within the range of about 1.00 to 1.20. The resulting compound is annealed at a temperature in excess of about 800 DEG C. and cooled to at least about 500 DEG C. at the rate less than about 10 DEG C. per hour before being finally cooled to ambient working temperature. Intercalation electrodes comprising these lithiated compounds are used in secondary batteries to yield stable, extended capacities in excess of 110 AHr/Kg.