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US 2022/0102730 A1Published application
Electrolytic copper foil and negative current collector of lithium secondary battery
AssigneeIndustrial Technology Research Institute
InventorChiu-Yen Chiu
Life of this patent
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Abstract
An electrolytic copper foil is provided, in which the average grain size of the electrolytic copper foil in cross-section measured by electron back scattered diffraction (EBSD) is 1 μm or less in diameter. Moreover, in an X-ray diffraction (XRD) pattern of a first surface of the electrolytic copper foil measured by X-ray diffraction, a ratio of the diffraction peak intensity of (111) crystal plane to the sum of the diffraction peak intensities of (111) crystal plane, (200) crystal plane, (220) crystal plane, and (311) crystal plane is 0.5 or more.
Claims10
An electrolytic copper foil, wherein:
- an average grain size of the electrolytic copper foil in cross-section measured by electron back scattered diffraction is 1 μm or less in diameter;
- and
- in an X-ray diffraction pattern of a first surface of the electrolytic copper foil measured by X-ray diffraction, a ratio of a diffraction peak intensity of a (111) crystal plane to a sum of diffraction peak intensities of a (111) crystal plane, a (200) crystal plane, a (220) crystal plane, and a (311) crystal plane is 0.5 or more.
Dependencies are inferred from the claim text.