Sk Nexilis Co., Ltd.

Young Tae Kim

Seung Min Kim

Young Gyu Yang

In Soo Jung

Jeong Gil Lee

Sang Hyun Jun

The present disclosure relates to an apparatus for accommodating copper foil. The apparatus includes an accommodation body in which an accommodation space for accommodating copper foil wound on a core is provided, a first support portion coupled to the accommodation body to support one side of the core, a second support portion coupled to the accommodation body to support the other side of the core, a first damper portion coupled to the first support portion to be disposed between the first support portion and the one side of the core, and a second damper portion coupled to the second support portion to be disposed between the second support portion and the other side of the core, wherein the first damper portion includes a first damper body coupled to the first support portion and a plurality of first damper protrusions protruding from the first damper body.

Apparatus accommodating copper foil

One embodiment of the present disclosure provides an electrolytic copper foil includes a copper layer and has a width direction weight deviation of 5% or less calculated according to Equation 1 below, a tensile strength of 25 kgf/mmto 62 kgf/mm, and a valley depth-to-thickness (VDT) of 3.5 to 66.9 calculated according to Equation 2 below.width direction weight deviation (%)=(standard deviation of weight/arithmetic mean of weight)×100, and  [Equation 1]VDT=[thickness of electrolytic copper foil]/[maximum valley depth of roughness profile()].  [Equation 2]

Electrolytic copper foil capable of preventing tearing or wrinkle defects, electrode containing same, secondary battery containing same, and method for manufacturing same

Growing community of inventors

Jeongeup-si, South Korea

Young Tae Kim