Sk Nexilis Co., Ltd.

An Na Lee

Seung Min Kim

Shan Hua Jin

Ho Gun Kim

Provided in one embodiment of the present disclosure is a copper foil, which comprises a copper layer having a matte surface and a shiny surface, and an anticorrosive film arranged on the copper layer, and has a residual stress of 0.5-25 MPa on the basis of the absolute value thereof, wherein the copper layer comprises copper and carbon (C), the amount of carbon (C) in the copper layer is 2-20 ppm, the copper layer has a plane (), a plane (), a plane () and a plane () including crystalline particles, the ratio of the diffraction intensity of the plane () to the sum of the diffraction intensities of the plane (), the plane (), the plane () and the plane () is 10-40%, and the crystalline particles of the plane () have an average particle size of 70-120 nm at room temperature.

Copper foil with anti-wrinkle property, electrode comprising same, secondary battery comprising same, and manufacturing method therefor

The present invention relates to a copper foil current collector having superior adhesion to an active material of a Li secondary battery. The electrolytic copper foil of the present invention having a first surface and a second surface comprises: a first protective layer at the first surface; a second protective layer at the second surface; and a copper film between the first and second protective layers, wherein an oxygen-containing part at the second surface has a thickness (OT) of not less than 1.5 nm. According to the present invention, an electrolytic copper foil current collector for a Li secondary battery, which has low electric resistance and high adhesion to an active material, can be provided.

Electrolytic copper foil, method for manufacturing the same, and anode for lithium secondary battery of high capacity

Disclosed is a copper foil including a copper layer having a matte surface and a shiny surface, and an anticorrosive layer disposed on the copper layer, wherein the copper foil has a residual stress of 0.5 to 25 Mpa, based on absolute value, and the copper layer has a plurality of crystal planes, wherein a ratio [TCR (220)] of a texture coefficient (TC) of (220) crystal plane of the copper layer to a total of texture coefficients (TC) of (111), (200), (220) and (311) crystal planes of the copper layer is 5 to 30%.

Copper foil free from generation of wrinkles, electrode comprising the same, secondary battery comprising the same and method for manufacturing the same

Disclosed is a copper foil including a copper layer and an anticorrosive layer disposed on the copper layer, wherein the copper foil has a peak to arithmetic mean roughness (PAR) of 0.8 to 12.5, a tensile strength of 29 to 58 kgf/mm, and a weight deviation of 3% or less, wherein the PAR is calculated in accordance with the following Equation 1:&#x2003;&#x2003;[Equation 1]

Copper foil with minimized bagginess and tear, electrode comprising the same, secondary battery comprising the same and method for manufacturing the same

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Anyang-si, South Korea

An Na Lee