ANTI-SWELLING COPPER FOIL

The present invention relates to a copper foil exhibiting surprising deformation preventing properties (swelling, sagging, wrinkle resistance, and the like). Typically, the copper foil comprises: (A) a polished surface having a surface roughness (Rz) in the range of 0.6-1.9 m; a matte surface having...

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Bibliographische Detailangaben
Hauptverfasser:	CHENG KUEI SEN, CHOU JUI CHANG, LIU YUEH MIN, LAI YAO SHENG
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	APPARATUS THEREFOR BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	The present invention relates to a copper foil exhibiting surprising deformation preventing properties (swelling, sagging, wrinkle resistance, and the like). Typically, the copper foil comprises: (A) a polished surface having a surface roughness (Rz) in the range of 0.6-1.9 m; a matte surface having a surface roughness (Rz) in the range of 0.6-1.9 m; and (C) a lightness L* value of the matte surface in the range of 12-35 based on Lab* color system. The present invention also relates to an anode comprising an anode active material on an anode current collector comprising the aforementioned copper foil. The anode is used, for example, in a lithium ion secondary battery. 본 발명은 놀라운 변형방지 특성 (예컨대, 팽윤, 새깅 및 주름 저항성)을 나타내는 구리박에 관한 것이다. 전형적으로, 구리박은 (a) 0.6 내지 1.9 ㎛ 범위의 표면 조도(Rz)를 가지는 광택면; (b) 0.6 내지 1.9 ㎛ 범위의 표면 조도(Rz)를 가지는 무광택면; 및 (c) Lab표색계에 기초해 12 내지 35 범위에서의 무광택면의 명도 L값을 가진다. 본 발명은 또한 상기 언급한 구리박을 포함하는 애노드 집전체 상에 애노드 활성 물질을 포함하는 애노드에 관한 것이다. 이 애노드는 예를 들어, 리튬 이온 이차 전지에 사용된다.