| 摘要 |
A positive active material for a rechargeable lithium battery, a method of manufacturing the same, and a rechargeable lithium battery using the same, the positive active material including a secondary particle formed of a plurality of primary particles, the primary particles being made of a metal compound capable of intercalating/deintercalating lithium; and a coating layer on a surface of the secondary particle in an island arrangement, the coating layer including a metal oxide, wherein the secondary particle includes pores formed by the primary particles, the pores including a surface pore on the surface of the secondary particle and an internal pore inside the secondary particle, and the metal oxide of the coating layer fills a portion of the surface pore of the secondary particle. |
| 主权项 |
1. A positive active material for a rechargeable lithium battery, the positive active material comprising:
a secondary particle formed of a plurality of primary particles, the primary particles being made of a metal compound capable of intercalating/deintercalating lithium; and a coating layer on a surface of the secondary particle in an island arrangement having a varying distribution, the coating layer including a metal oxide, wherein:
the secondary particle includes pores formed by the primary particles, the pores including a surface pore on the surface of the secondary particle and an internal pore inside the secondary particle,the metal oxide of the coating layer fills a portion of the surface pore of the secondary particle,the metal oxide of the coating layer fills a portion of the internal pore of the secondary particle in response to a vacuum treatment of a mixture of the secondary particle and a coating liquid, anda metal of the metal oxide includes Li, Na, Mg, Al, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Sr, Y, Zr, Nb, Mo, Ba, Hf, La, or a mixture thereof. |
