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US 10,122,021 B2Granted
Electrolytic copper foil, and collector, negative electrode, and lithium battery comprising same
AssigneeIljin Materials Co., Ltd.
InventorsKi Deok Song, Sun Hyoung Lee, Tae Jin Jo, Seul Ki Park
Life of this patent
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Abstract
Disclosed is an electrolytic copper foil having specific resistivity of 1.68 to 1.72 μΩ·cm and a grain mean diameter of a crystallite less than 0.41 to 0.80 μm.
Claims10
An electrolytic copper foil having specific resistivity of 1.68 to 1.72 μΩ·cm and a grain mean diameter of a crystallite less than 0.41 to 0.80 μm,
- wherein the electrolytic copper foil has a single modal grain size distribution representing one peak in a grain size distribution diagram obtained from an Electron Backscattering Diffraction Pattern (EBSP) analysis of the crystallite, and a Full Width at Half Maximum (FWHM) of the peak may be less than 0.7 μm,
- wherein in an XRD spectrum for a matte side of the electrolytic copper foil, M(220)/M(111) that is a ratio of an orientation index (M(220)) for a (220) crystalline surface to an orientation index (M(111)) for a (111) crystalline surface is 3.4 to 8.5.
Dependencies are inferred from the claim text.