METHOD OF MANUFACTURING CARBON COATED LITHIUM IRON PHOSPHATE COMPOSITE FOR CATHODE OF LITHIUM SECONDARY BATTERY

摘要

The present invention relates to a method of manufacturing a LiFePO ₄ / C composite material for a lithium secondary battery cathode, which can improve the electrical characteristics by adding lithium ions in an excess amount. The method for producing a LiFePO ₄ / C composite material for a lithium secondary battery cathode according to the present invention comprises: mixing an Fe precursor, a lithium source and a carbon source; And a mixture of FePO ₄ , a lithium source and a carbon source is ball milled to synthesize Li _1+x FePO _{4 /} C ( _x = 0.008 to 0.012).