Rheinisch-westfalisches Elektrizitatswerk Ag

Rheinisch-westfalishes Elektrizitatswerk Ag

Peter Faber

A method of making composite electrode for use in a storage battery or other accumulator comprises disposing on opposite sides of a metal support provided with throughgoing openings respective synthetic-resin layers adapted to form pockets for the active mass. The synthetic-resin layers, in the form of screens, fabrics, grids or the like, are ultrasonically welded through the openings of the metal support together by the simultaneous application of mechanical pressure and ultrasonic energy. The active mass is then introduced into the pockets formed by the synthetic-resin layers which may be covered, if desired, by fine-porous cover layers applied by heat and pressure so as to weld these cover layers to the first-mentioned synthetic-resin layers.

Method of making a composite electrode

A metal/synthetic-resin composite electrode for a storage battery or the like comprises a perforate metal support which is flanked on both sides by openworks of polyolefin, e.g. partially fluorinated polyolefin, which are welded together within the openings of the support and carry the active material. The polyolefin openworks, together with the active material, are covered in turn with polyester fabric or polyester felt permeable fine porous cover layers.

Composite electrode for storage batteries and the like

A metal/synthetic-resin composite electrode for a storage battery or the like comprises a perforate metal support which is flanked on both sides by openworks of polyolefin, e.g. partially fluorinated polyolefin, which are welded together within the openings of the support and carry the active material. The polyolefin openworks, together with the active material, are covered in turn with inorganic-fiber fabric or felt permeable fine porous cover layers. The inorganic fiber, although preferably glass, can also be mineral wool or asbestos fiber.

A composite electrode for storage batteries and the like comprises a metal current-carrying support provided with a surface array of perforations and covered on opposite sides with perforate synthetic-resin layers of net, screen, fabric or the like. These synthetic-resin layers are fused together at points through the openings of the metal support. The synthetic-resin layers may form retaining pockets for the active mass and the latter may be covered on both sides or one side of the electrode with additional layers of porous synthetic-resin material, preferably a fleece or mat of nonwoven synthetic-resin fibers.

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Karlstein am Main, Germany

Peter Faber