Electrolytic copper foil and secondary battery using the same
AssigneeIljin Materials Co., Ltd.
InventorsSun Hyoung LEE, Seul-Ki PARK, Tae Jin JO, Ki Deok SONG
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Abstract
The present disclosure provides an electrolytic copper foil composed of a single layer or a stack of two or more layers, wherein the electrolytic copper foil has Total Organic Carbon (TOC) content equal to or smaller than 4 ppm, and has chlorine (Cl) content equal to or smaller than 10 ppm, wherein the electrolytic copper foil has a thickness, a tensile strength, and an elongation satisfying a relationship 1 below: relationship 1: thickness (μm)/(tensile strength (kgf/mm2)*elongation (%))≤0.1.
Claims16
An electrolytic copper foil composed of a single layer or a stack of two or more layers, wherein the electrolytic copper foil has Total Organic Carbon (TOC) content equal to or smaller than 4 ppm, and has chlorine (Cl) content equal to or smaller than 10 ppm, wherein the electrolytic copper foil has a thickness, a tensile strength, and an elongation satisfying a relationship 1 below:
- thickness (μm)/(tensile strength (kgf/mm2)*elongation (%))≤0.1. relationship 1
Dependencies are inferred from the claim text.