Positive active material, positive electrode and lithium battery including the positive active material, and method of manufacturing the positive active material

• Main Authors: YOU, YONGCHAN, JE, HYUNJOO, KIM, JIHYUN, KIM, CHANGWOOK
• Format: Patent
• Language: English; French; German
• Published: 12.08.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A positive active material, a positive electrode and a lithium battery containing the positive active material, and a method of manufacturing the positive active material are disclosed. The positive active material includes: a positive active material core particle for intercalating and deintercalating lithium ions; and a coating layer at least partially surrounding the positive active material core particle and including a ceramic composite represented by Formula 1. €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ Formula 1€ƒ€ƒ€ƒ€ƒ€ƒLi 7+a La 3-b Zr 2-c M d O 12+e In Formula 1, M comprises at least one selected from aluminum (Al), titanium (Ti), scandium (Sc), vanadium (V), yttrium (Y), niobium (Nb), hafnium (Hf), tantalum (Ta), silicon (Si), gallium (Ga), and germanium (Ge), and -1‰¤a‰¤1, 0‰¤b‰¤2, 0‰¤c‰¤2, 0<d‰¤2, and 0‰¤e‰¤1.