ALL-SOLID-STATE BATTERY CATHODE ACTIVE MATERIAL, PREPARATION METHOD THEREFOR, AND ALL-SOLID-STATE BATTERY COMPRISING SAME
The present invention relates to an all-solid-state battery cathode active material which comprises: a core comprising a layered lithium transition metal oxide; and a coating layer arranged on the core and comprising a lithium-ion conductive oxide, and which is a secondary particle formed by the agg...
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Sprache: | eng ; fre ; kor |
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Zusammenfassung: | The present invention relates to an all-solid-state battery cathode active material which comprises: a core comprising a layered lithium transition metal oxide; and a coating layer arranged on the core and comprising a lithium-ion conductive oxide, and which is a secondary particle formed by the aggregation of a plurality of primary particles, wherein the primary particles are flake- or needle-shaped, have an average thickness of 50 nm or less and have a full width at half maximum (FWHM) (110) of the diffraction peak of (110) plane in X-ray diffraction spectrum analysis of 0.2 or less.
La présente invention concerne un matériau actif de cathode de batterie entièrement solide qui comprend : un noyau comprenant un oxyde de métal de transition de lithium stratifié ; et une couche de revêtement disposée sur le noyau et comprenant un oxyde conducteur d'ions lithium, et qui est une particule secondaire formée par l'agrégation d'une pluralité de particules primaires, les particules primaires étant en forme d'écaille ou d'aiguille, possédant une épaisseur moyenne de 50 nm ou moins et possédant une largeur totale à mi-hauteur (FWHM) (110) du pic de diffraction du plan (110) dans une analyse de spectre de diffraction des rayons X de 0,2 ou moins.
본 발명은 층상계 리튬 전이금속 산화물을 포함하는 코어; 및 상기 코어 상에 배치되며, 리튬 이온 전도성 산화물을 함유하는 코팅층을 포함하고, 복수의 1차 입자가 응집되어 형성된 2차 입자이고, 상기 1차 입자는 판상(flake) 또는 침상(needle)의 형태를 갖되, 평균 두께가 50nm 이하이며, X선 회절 스펙트럼 분석시 (110)면 회절 피크의 반치폭 FWHM(110)이 0.2 이하인, 전고체 전지용 양극 활물질에 관한 것이다. |
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