Patent ID: 9698426
Date: 2017-07-04
CPC Classifications: C22C,C22F,H01G,H01M,Y02E

Claim:
1. A method for manufacturing an aluminum alloy foil for electrode current collector, comprising the steps of: performing a homogenization treatment of an aluminum ingot consisting of 0.2% to 0.48 mass % (hereinafter mass % is referred to as %) of Fe, 0.05% to 0.3% of Si, 0.02% to 0.16% of Cu, 0.05% to 0.3% of Mn, and unavoidable impurities, wherein a total amount of the unavoidable impurities is 0.15% or less, and the amount of each of the unavoidable impurities being 0.02% or less, for 1 to 20 hours at 570° C. or higher and 620° C. or lower; performing a hot rolling after the homogenization treatment with a starting temperature of 520° C. or higher and an end-point temperature of 330° C. or lower; and performing a plurality of cold rolling; wherein an intermediate annealing is not performed immediately before the plurality of cold rolling, an intermediate annealing is not performed in between each of the plurality of cold rolling, and an intermediate annealing is not performed after the plurality of cold rolling.