Sk Nexilis Co., Ltd.

Kcf Technologies Co., Ltd.

Seung Min Kim

Shan Hua Jin

An Na Lee

In Soo Jung

Young Tae Kim

Jeong Gil Lee

Ho Gun Kim

Young Gyu Yang

Dae Young Kim

Joong Kyu An

Yeon Tae Choi

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

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

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

The present disclosure relates to an apparatus for accommodating copper foil. The apparatus includes an accommodation body having an accommodation space which accommodates copper foil wound on a core, a support portion coupled to the accommodation body and configured to support both ends of the core, and an elastic member disposed between the support portion and the core and configured to support the core. Here, the elastic member includes a body portion, a plurality of first protrusions arranged on a top surface of the body portion and extending in a longitudinal direction of the core, and a plurality of second protrusions arranged on a bottom surface of the body portion and extending in a direction perpendicular to the extending direction of the plurality of first protrusions. Accordingly, vibrations may be buffered in a frequency band of vibrations occurring in a transportation process.

Storage device for copper foil roll

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

The present invention relates to an electrolytic copper foil having excellent handling characteristics in the manufacture of copper foil and in post-processing for manufacturing a secondary battery. The present invention provides an electrolytic copper foil having a first surface and a second surface, wherein the texture coefficient of the () plane of the electrolytic copper foil is 0.4-1.32, the difference (|&#x394;(Rz/Ra)|) between Rz/Ra on the first surface and Rz/Ra on the second surface, of the electrolytic copper foil, is less than 2.42, and the difference (|&#x394;PD|) in peak density (PD) between the first surface and the second surface, of the electrolytic copper foil, is 96 ea or less.

Electrolytic copper foil having excellent handling characteristics in postprocessing, and manufacturing method therefor

An embodiment of the present invention provides a copper foil which comprises a copper layer and an anticorrosive film placed on the copper layer, and has a Young's modulus of 3800 to 4600 kgf/mmand a modulus bias factor (MBF) less than 0.12, wherein the modulus bias factor (MBF) is obtained by formula 1 below.MBF=(maximum Young's modulus&#x2212;minimum Young's modulus)/(average Young's modulus)&#x2003;&#x2003;[Formula 1]

Copper foil having excellent adhesive strength, electrode comprising same, secondary battery comprising same, and manufacturing method therefor

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

Disclosed are an electrolytic copper foil the fold and/or wrinkle of which can be avoided or minimized during a roll-to-roll process, a method for manufacturing the same, and an electrode and a secondary battery which are produced with such electrolytic copper foil so that high productivity can be guaranteed. An electrolytic copper foil of the disclosure has a longitudinal rising of 30 mm or less and a transverse rising of 25 mm or less, and the transverse rising is 8.5 times the longitudinal rising or less.

Electrolytic copper foil, electrode comprising the same, secondary battery comprising the same, and method for manufacturing the same

The present invention relates to: an electrolytic copper foil having high dimensional stability and texture stability in a high temperature environment of a process for manufacturing an Li secondary battery; and a manufacturing method therefor. The electrolytic copper foil of the present invention has a thermal expansion coefficient of 17.1-22 &#x3bc;m/(m&#xb7;&#xb0; C.) in a temperature region of 30-190&#xb0; C., has a variation of full width at half maximum of the (220) plane of 0.81-1.19 according to heat treatment for 30 minutes at 190&#xb0; C., and has a weight deviation of 5% or less in the transverse direction.

Electrolytic copper foil having high-temperature dimensional stability and texture stability, and manufacturing method therefor

The present invention relates to an electrolytic copper foil current collector where the surface properties are controlled to achieve a high adhesiveness to a negative electrode material. An electrolytic copper foil has a first surface and the second surface, the electrolytic copper foil comprising a first protective layer on the first surface side, a second protective layer on the second surface side, and a copper film between the first and second protective layers, wherein the coupling coefficient at the first surface or second surface of the electrolytic copper foil is 1.5 to 9.4 as represented by coupling coefficient=Rp/&#x3bc;m+ peak density/30+ amount of Cr adhesion/(mg/m) (here, peak density is measured according to ASME standard B46.1). The electrolytic copper foil has a high adhesiveness to a negative electrode material and a low electrical resistance can be provided by controlling the surface properties of the electrolytic copper foil surface.

Electrolytic copper foil, method for producing same, and high-capacity Li secondary battery negative electrode including same

An easily handleable electrolytic copper foil securing a highly durable secondary battery, an electrode including same, a secondary battery including same, and a method of manufacturing same. The electrolytic copper foil including first and second surfaces includes a copper layer including a matte surface facing the first surface and a shiny surface facing the second surface, a first protective layer formed on the matte surface of the copper layer, and a second protective layer formed on the shiny surface of the copper layer. A coefficient of thermal expansion of the electrolyte copper foil measured using thermomechanical analyzer while heating the electrolytic copper foil from 30 to 190&#xb0; C. at 5&#xb0; C./min ranges from 16 to 22 &#x3bc;m/(m&#xb7;&#xb0; C.), tensile strength of the electrolytic copper foil measured after heat treatment at 190&#xb0; C., ranges from 21 to 36 kgf/mm, and weight deviation of the electrolytic copper foil is 5% or less.

Easily handleable electrolytic copper foil, 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 having a tensile strength of 29 to 65 kgf/mm, a mean width of roughness profile elements (Rsm) of 18 to 148 &#x3bc;m and a texture coefficient bias [TCB(220)] of 0.52 or less.

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

Provided is a copper foil. The copper foil includes a copper layer and a protective layer disposed on the copper layer, wherein a surface of the protective layer has a maximum height roughness (R) of 0.6 &#x3bc;m to 3.5 &#x3bc;m, a peak density (PD) of 5 to 110, and an oxygen atomic amount of 22 at % (atomic %) to 67 at %.

Growing community of inventors

Anyang-si, South Korea

Seung Min Kim