PREPARATION METHOD FOR MODIFIED LITHIUM-ION BATTERY LITHIUM TITANATE NEGATIVE ELECTRODE MATERIAL

摘要

Disclosed is a preparation method for a modified lithium titanate negative electrode material. The preparation method for the modified lithium titanate negative electrode material, in which raw materials are proportioned according to parts by weight, comprises the following process steps: (1) preparation of lithium titanate; (2) the lithium titanate, a phenolic resin, and tin nanopowder are mixed into a uniform slurry; (3) lithium titanate powder is produced by spray drying; (4) the powder produced in step (3) is mixed evenly with an asphalt powder; and, (5) under the protection of a noble gas, the powder produced in step (4) undergoes a high temperature treatment to produce the modified lithium titanate negative electrode material. The present invention allows preparation of lithium titanate by means of a solid phase method and has the advantages of a simple process, inexpensive manufacturing costs, and a short production cycle.