METHOD FOR MODIFYING LITHIUM IRON PHOSPHATE CATHODE MATERIAL, CATHODE PLATE, AND LITHIUM IRON PHOSPHATE BATTERY

摘要

The present application provides a method for modifying lithium iron phosphate cathode material, comprising steps of: 1) mixing a binder and a metal-containing modifier at a certain proportion to form a first slurry, wherein the binder is a mixture of ammonium chloride and a phosphate organic binder or a mixture of ammonium chloride and an inorganic binder; 2) mixing the first slurry and lithium iron phosphate powder at a certain proportion to form a second slurry; 3) heating the second slurry at 300-400° C. for 4-8 hours to form a solidified slurry; 4) heating the solidified slurry at 600-700° C. for 36-48 hours to obtain a modified lithium iron phosphate cathode material. The present application also provides a cathode plate and a lithium ion battery including the same.