Abstract: An apparatus for achieving desired surface roughness characteristics on an electrode material that is coated on a substrate such that the electrode material has desired surface roughness characteristics includes a roller. The roller has surface roughness characteristics corresponding to those desired in the electrode material. The apparatus includes a device for rotating the roller. The apparatus presses electrode material coated on a substrate against the surface of the roller so that the electrode material assumes substantially the same roughness characteristics as the surface of the roller. A nip roller is used to press the electrode material against the surface of the roller, the position of the nip roller being movable to adjust the thickness of the electrode material. A refrigeration apparatus is provided to cool the roller to a casting temperature for casting electrode material that has been pressed against the roller.