COMPOSITE POSITIVE ELECTRODE ACTIVE MATERIAL COATED WITH FERROELECTRIC MATERIAL IN POSITIVE ELECTRODE ACTIVE MATERIAL HIGH-CAPACITY POSITIVE ELECTRODE MATERIAL AND LITHIUM SECONDARY BATTERY USING THE SAME AND METHOD FOR MANUFACTURING THE SAME

COMPOSITE POSITIVE ELECTRODE ACTIVE MATERIAL COATED WITH FERROELECTRIC MATERIAL IN POSITIVE ELECTRODE ACTIVE MATERIAL HIGH-CAPACITY POSITIVE ELECTRODE MATERIAL AND LITHIUM SECONDARY BATTERY USING THE SAME AND METHOD FOR MANUFACTURING THE SAME

The present invention provides a composite positive electrode active material coated with a nano-sized ferroelectric material, a high-capacity positive electrode material and a lithium secondary battery using the same, and a manufacturing method thereof for improving the rate characteristics and hig...

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Bibliographische Detailangaben
Hauptverfasser: JONG DON SUK, SAN MOON, MI HYE WU, SE HEE KIM, DO YOUB KIM
Format: Patent
Sprache:eng ; kor
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Zusammenfassung:The present invention provides a composite positive electrode active material coated with a nano-sized ferroelectric material, a high-capacity positive electrode material and a lithium secondary battery using the same, and a manufacturing method thereof for improving the rate characteristics and high temperature life characteristics of lithium secondary batteries. The ferroelectric material has a perovskite crystal structure and has a diameter of 2 nm to 150 nm. 본 발명은 리튬이차전지의 율특성과 고온 수명 특성을 향상시키기 위하여 양극활물질에 나노크기의 강유전성 물질이 코팅된 복합양극활물질, 이를 채용한 고용량 양극재와 리튬이차전지 및 이의 제조방법을 제공한다.