CATHODE ACTIVE MATERIAL, SECONDARY BATTERY COMPRISING THE SAME, AND PREPARATION METHOD THEREOF

• Main Authors: SONG, MIN SANG, SHON, JEONG KUK, YOON, JAE GU, HAM, DONG JIN, CHANG, JAE JUN, JI, SANG MIN, CHOI, JAE MAN, PARK, KWANG JIN
• Format: Patent
• Language: English; Korean
• Published: 05.06.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

In the present invention, provided are a positive electrode active material, including a non-metallic oxide, metallic oxides or oxide cores of the combination thereof which absorb and discharges lithium ions or sodium ions; and non-conductive carbon based film including partly oxygen on the surfaces of the cores, a secondary battery including the same and a manufacturing method thereof. 리튬 이온 또는 나트륨 이온의 흡장 및 방출이 가능한 금속 산화물, 비금속 산화물, 또는 이들 조합의 산화물 코어; 및 상기 코어 표면의 적어도 일부에 산소를 함유하는 비전도성 카본계 막을 포함하는 양극 활물질, 이를 포함하는 이차전지, 및 이의 제조방법이 제공된다.