Abstract: Disclosed is a positive active material for a lithium secondary battery and a preparation method of the same that can improve cycle-life characteristics and storage characteristics at a high temperature by improving structural safety characteristics and electrochemical characteristics, by forming an overlayer comprising an oxide glass phase on the surface of the positive active material, and a lithium secondary battery comprising the positive active material.

Abstract: This invention relates to complex lithium metal oxides, which are cathode active materials of a lithium or lithium ion secondary battery with enhanced cycle life and safety, and a process for preparation thereof. The core particles are complex lithium metal oxides capable of absorbing, storing and emitting lithium ions, and a coating layer comprised of amorphous complex lithium cobalt oxides that are formed on the surface of the core particle, which is structurally stable and inactive with electrolytes. Because the amorphous complex lithium cobalt oxides are inactive with electrolytes, the oxides stabilize the surface structure of the complex lithium metal oxide and improve on high temperature storage properties, as well as safety and cycle life.

Abstract: Disclosed is a positive active material for a lithium secondary battery and a preparation method of the same, in particular a positive active material and preparation method of the same that can improve cycle-life characteristics at a high temperature and room temperature, and storage characteristics at a high temperature. The present invention has the effect of providing a positive active material and preparation method of the same that can improve cycle-life characteristics at room temperature and at a high temperature, and storage characteristics at a high temperature, by coating the surface of the lithium manganese spinel oxide particles with a lithium metal complex oxide.

Abstract: Disclosed is a positive active material for a lithium secondary battery and a preparation method of the same that can improve cycle-life characteristics and storage characteristics at a high temperature by improving structural safety characteristics and electrochemical characteristics, by forming an overlayer comprising an oxide glass phase on the surface of the positive active material, and a lithium secondary battery comprising the positive active material.

Abstract: This invention relates to complex lithium metal oxides, which are cathode active materials of a lithium or lithium ion secondary battery with enhanced cycle life and safety, and a process for preparation thereof. The core particles are complex lithium metal oxides capable of absorbing, storing and emitting lithium ions, and a coating layer comprised of amorphous complex lithium cobalt oxides that are formed on the surface of the core particle, which is structurally stable and inactive with electrolytes. Because the amorphous complex lithium cobalt oxides are inactive with electrolytes, the oxides stabilize the surface structure of the complex lithium metal oxide and improve on high temperature storage properties, as well as safety and cycle life.

Abstract: The present invention relates to an anode material for a battery and a preparation method thereof, and particularly to surface-treated carbon that has a large capacity and superior room temperature and high temperature cycle life properties, and that comprises a carbon core and a coating layer containing a fluorine-type organometal salt, and thus can be used as an anode material for a battery; and a preparation method thereof. A lithium or lithium ion secondary battery comprising the surface-treated carbon as an anode material has improved high temperature cycle life properties and stability.

Abstract: Disclosed is a positive active material for a lithium secondary battery and a preparation method of the same that can improve cycle-life characteristics and storage characteristics at a high temperature by improving structural safety characteristics and electrochemical characteristics, by forming an overlayer comprising an oxide glass phase on the surface of the positive active material, and a lithium secondary battery comprising the positive active material.

Abstract: Disclosed is a positive active material for a lithium secondary battery and a preparation method of the same, in particular a positive active material and preparation method of the same that can improve cycle-life characteristics at a high temperature and room temperature, and storage characteristics at a high temperature.