| abstract |
Disclosed are: a three-dimensional net-like aluminum porous material in which the cell diameters are not uniform when observed in the thicknesswise direction; a current collector and an electrode each of which comprises the aluminum porous material; and a process for producing the aluminum porous material. Specifically disclosed is a sheet-shaped three-dimensional net-like aluminum porous material for a current collector, which is characterized in that the cell diameters are not uniform when observed in the thicknesswise direction. When the cross-section of the three-dimensional net-like aluminum porous material in the thicknesswise direction is divided into three regions, i.e., a region (1), a region (2) and a region (3) in this order, it is preferred that each of the average cell diameters of the region (1) and the region (3) is different from the average cell diameter of the region (2). |