LITHIUM IRON PHOSPHATE-CONTAINING COMPOSITE NEGATIVE ELECTRODE ACTIVE MATERIAL OF LITHIUM ION BATTERY, COMPOSITE NEGATIVE ELECTRODE PLATE, AND LITHIUM ION BATTERY

摘要

A lithium iron phosphate-containing composite negative electrode active material of a lithium ion battery. The active material of the composite negative electrode comprises: lithium iron phosphate and a conventional negative electrode material. The composite negative electrode has low volumetric swelling, a high specific capacity, highly stable circulation and optimal rate performance. The battery is safe, non-polluting, and uses affordable raw materials. The preparation method is simple, easily executed and well suited for large scale industrial production.