Patent ID: 9748527
Date: 2017-08-29
CPC Classifications: C22C,C22F,H01M,Y02E,Y02P,Y02T

Claim:
1. An aluminum alloy sheet material for a lithium-ion battery comprising 0.8 to 1.5 mass % of Mn, 0.6 mass % or less of Si, 0.7 mass % or less of Fe, 0.2 mass % or less of Cu, and 0.2 mass % or less of Zn, with the balance being Al and unavoidable impurities, Al—Mn—Si-based intermetallic compounds having a maximum length of less than 1.0 μm being distributed in a matrix of the aluminum alloy sheet material in a number equal to or larger than 0.25 per μm 2 , and an area ratio of the intermetallic compounds being 3.0% or more when a field of view having an area of 5000 μm 2 is subjected to image analysis.