Patent ID: 11962015
Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An electrolytic copper foil, comprising a first surface and a second surface opposite the first surface, wherein an absolute difference of a full width at half maximum (FWHM) of a characteristic peak of (111) plane of the first surface and an FWHM of a characteristic peak of (111) plane of the second surface analyzed by grazing incidence X-ray diffraction (GIXRD) is less than 0.14, the first surface and the second surface each have a nanoindentation hardness more than or equal to 0.3 GPa and less than or equal to 3.0 GPa, and a yield strength of the electrolytic copper foil is more than 230 MPa.