Patent ID: 8349518
Filing Date: 2013-01-08
Classification: B32B,C22C,C25D,H01M,Y02E,Y10T

Abstract:
1. A copper foil for a current collector of a lithium secondary battery, wherein, in a crystalline structure, a ratio of a sum of texture coefficients of a ( wherein the texture coefficient satisfies the following equation: where I(hkl) represents a measured diffraction intensity with respect to a (hkl) surface, and I 0 (hkl) represents a standard diffraction intensity of ASTM (American Society of Testing Materials) standard powder-shaped diffraction data, wherein the copper foil has a surface roughness (R wherein the copper foil has a weight deviation of 3% or less, wherein the copper foil has a tensile strength of 30 to 40 kgf/mm wherein the copper foil has an elongation of 3 to 20%, and wherein the copper foil has a thickness of 1 to 35 μm.