| 摘要 |
PURPOSE: An anode active material, whose surface being coated by a metal, of a secondary lithium electric cell is provided to improve structural stability, and to increase lifespan thereof by 30% and over. CONSTITUTION: A method for manufacturing an anode material of a secondary lithium electric cell is comprised of the steps of: dissolving the metallic compound containing aluminum, magnesium, tin, calcium, titanium and manganese into alcohol in order to manufacture the metallic compound liquid sol; coating LiCoO2 with the metallic compound liquid sol; and firing the coated LiCoO2 at 150-500 deg.C. Here, the concentration ratio of the metals on the surface layer and those of the center is 3-10 to 1. Also, the amount of metals to be coated is 0.1-6 mol% of the mixture weight of the metals and Co. |
