정극 활물질은, 리튬 복합 산화물을 포함하는 입자와, 입자의 표면에 형성되고, 리튬 복합 산화물을 포함하는 제1층과, 제1층의 표면에 형성된 제2층을 구비한다. 입자에 포함되는 리튬 복합 산화물과 제1층에 포함되는 리튬 복합 산화물은 동일 조성 또는 거의 동일 조성이다. 제2층은, 산화물 또는 불화물을 포함하고 있다. 제1층에 포함되는 리튬 복합 산화물은, 입자에 포함되는 리튬 복합 산화물보다 결정성이 낮다.

    A positive electrode active material includes: a particle including a lithium composite oxide; a first layer that is provided on a surface of the particle and includes a lithium composite oxide; and a second layer that is provided on a surface of the first layer. The lithium composite oxide included in the particle and the lithium composite oxide included in the first layer have the same composition or almost the same composition, the second layer includes an oxide or a fluoride, and the lithium composite oxide included in the first layer has lower crystallinity than the lithium composite oxide included in the particle.


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    Title :

    POSITIVE-ELECTRODE ACTIVE MATERIAL POSITIVE ELECTRODE BATTERY BATTERY PACK ELECTRONIC DEVICE ELECTRIC VEHICLE ELECTRICITY STORAGE APPARATUS AND POWER SYSTEM


    Additional title:

    정극 활물질, 정극, 전지, 전지 팩, 전자 기기, 전동 차량, 축전 장치 및 전력 시스템


    Publication date :

    2021-12-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / C01F COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS , Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden