SECONDARY BATTERY ACTIVE MATERIAL
The present invention provides a secondary battery active material which is formed from aggregates of a plurality of unit particles or formed from a mixture of non-aggregated unit particles and the aggregates, and which comprises a first area part having a relatively high amount of an additional ele...
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Sprache: | eng ; fre ; kor |
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Zusammenfassung: | The present invention provides a secondary battery active material which is formed from aggregates of a plurality of unit particles or formed from a mixture of non-aggregated unit particles and the aggregates, and which comprises a first area part having a relatively high amount of an additional element (X) and a second area part having a relatively low amount of the additional element (X), wherein the first area part is: at least one region from among grain boundaries formed by the mutual contact of the surfaces of the unit particles constituting the aggregates, and the pores or gaps between the unit particles; and/or the surface regions of the unit particles, and the additional element (X) is at least one selected from the group consisting of Zr, Ti, Al, W, B, P, Mn, Ni, Mg, Cr, Ca, V, Sr, Y, F, Zn, Ga, Sn, Ru, Ce, La and Si.
La présente invention concerne un matériau actif de batterie secondaire qui est formé d'agrégats d'une pluralité de particules unitaires ou formé d'un mélange de particules unitaires non agrégées et des agrégats, et qui comprend une première partie de zone présentant une quantité relativement élevée d'un élément supplémentaire (X) et une seconde partie de zone présentant une quantité relativement faible de l'élément supplémentaire (X), la première partie de zone étant : au moins une région parmi des joints de grains formés par le contact mutuel des surfaces des particules unitaires constituant les agrégats, et les pores ou espaces entre les particules unitaires ; et/ou les régions de surface des particules unitaires, et l'élément supplémentaire (X) étant au moins un élément choisi dans le groupe constitué par Zr, Ti, Al, W, B, P, Mn, Ni, Mg, Cr, Ca, V, Sr, Y, F, Zn, Ga, Sn, Ru, Ce, La et Si.
본 발명은, 복수의 단일체 입자들로 구성된 응집체로 이루어져 있거나, 미응집 단일체 입자와 응집체의 혼합으로 이루어져 있고, 부가원소(X)의 함량이 상대적으로 높은 제 1 영역부와 부가원소(X)의 함량이 상대적으로 낮은 제 2 영역부를 포함하며, 상기 제 1 영역부는, 응집체를 구성하는 단일체 입자들의 표면이 상호 접하여 형성된 결정립계(grain boundary)와 단일체 입자들 사이의 공극(pore 또는 gap) 중 하나 이상의 부위이거나, 및/또는 단일체 입자의 표면 부위이며, 상기 부가원소(X)는 Zr, Ti, Al, W, B, P, Mn, Ni, Mg, Cr, Ca, V, Sr, Y, F, Zn, Ga, Sn, Ru, Ce, La, Si로 이루어진 군에서 선택되는 하나 이상인 것을 특징으로 하는 이차전지용 활물질을 제공한다. |
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