Manufacturing method of aluminum alloy foil for electrode current collector and aluminum alloy foil for electrode current collector

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy foil for electrode collector achieving high strength and high elongation and excellent in rolling property.SOLUTION: An aluminum alloy foil has a composition containing, by mass%, Fe:0.5% to 1.0%, Cu:0.05% to 0.25%, Si:0.01% to 0.10%, Mn:0.10% or less and the balance Al with inevitable impurities, homogenization treatment for holding an ingot of the alloy is conducted at 450 to 580°C for hour hours or longer during manufacturing and then cold rolling is conducted to make final cold rolling rate in cold rolling of 98.3% or more.SELECTED DRAWING: None