A METHOD OF PREPARING A LITHIUM IRON PHOSPHATE CATHODE MATERIAL FOR LITHIUM SECONDARY BATTERIES

摘要

Described is a method of preparing a cathode material for lithium secondary batteries, the method comprising the following steps: sintering a first mixture containing a lithium compound, an iron compound, a phosphorous compound and a carbon additive at a first temperature, to obtain a first sintering product; mixing the first sintering product and a carbon additive, to obtain a second mixture; and sintering the second mixture at a second temperature, to obtain the cathode material. The cathode material so produced exhibits superior electrical properties.