US 9,812,700 B2
Method for producing porous aluminum foil, porous aluminum foil, positive electrode current collector for electrical storage devices, electrode for electrical storage devices, and electrical storage device
Atsushi Okamoto, Mishima-gun (JP)
Assigned to HITACHI METALS, LTD., Tokyo (JP)
Appl. No. 14/354,237
Filed by HITACHI METALS, LTD., Tokyo (JP)
PCT Filed Oct. 25, 2012, PCT No. PCT/JP2012/077538
§ 371(c)(1), (2) Date May 30, 2014,
PCT Pub. No. WO2013/062026, PCT Pub. Date May 2, 2013.
Claims priority of application No. 2011-235858 (JP), filed on Oct. 27, 2011.
Prior Publication US 2014/0272598 A1, Sep. 18, 2014
Int. Cl. H01M 4/04 (2006.01); H01M 4/06 (2006.01); C25D 1/04 (2006.01); C25D 1/20 (2006.01); C25D 3/44 (2006.01); H01G 11/68 (2013.01); H01G 11/70 (2013.01); H01M 4/66 (2006.01)
CPC H01M 4/0469 (2013.01) [C25D 1/04 (2013.01); C25D 1/20 (2013.01); C25D 3/44 (2013.01); H01G 11/68 (2013.01); H01G 11/70 (2013.01); H01M 4/661 (2013.01); Y02E 60/13 (2013.01)] 9 Claims
 
1. A method for producing a porous aluminum foil, characterized in that
a porous aluminum film is formed on a surface of a substrate by electrolysis using a plating solution containing at least (1) a dialkyl sulfone, (2) an aluminum halide in an amount of 1.5 to 4.0 mol per 10 mol of the dialkyl sulfone, (3) a nitrogen-containing compound in an amount of 0.01 to 2.0 mol per 10 mol of the dialkyl sulfone, and (4) an added water content of 100 to 2000 ppm, and
the film is then separated from the substrate.