Method of making lead electrodes
AssigneeKamina, Ltd.
InventorsGeorgi T. Stoilov, Vladimir G. Stoilov, Boiko G. Stoilov, Christo T. Chervenkov, Pavel A. Lazov
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Abstract
A method for making porous lead dioxide electrodes having a relatively large active surface area and long service life is disclosed. The electrodes employ a grid which is coated first with a thin layer of nickel and then with a thin layer of lead. A paste containing a halogenated lead compound is applied over the lead and successively reduced and oxidized to form an active mass of porous lead dioxide. The finished porous lead dioxide electrode is suitable for use in storage batteries.
Claims10
A method for making a porous lead electrode, which comprises:
- providing a non-metallic grid;
- coating the non-metallic grid with a very thin layer of conductive acid resistant base metal;
- coating the conductive acid resistant base metal layer of the grid with a thin layer of lead;
- covering the layer of lead coated on the conductive acid resistant base metal layer with a paste containing a halogenated lead compound;
- submerging the paste-covered grid solution;
- providing an anode in the solution which is electrically coupled to the paste covered grid;
- and
- reducing the halogenated lead compound to form an electrode having a porous elemental crystalline lead layer.
A porous lead electrode made by a process comprising:
- providing a plastic grid;
- coating the plastic grid with a very thin layer of conductive acid resistant base metal;
- coating the conductive acid resistant base metal layer of the grid with a thin layer of lead;
- covering the layer of lead coated on the conductive acid resistant base metal layer with a paste containing a halogenated lead compound;
- submerging the paste-covered grid in an electrically conductive solution;
- providing an anode in the solution which is electrically coupled to the paste covered grid;
- and
- reducing the halogenated lead compound to form an electrode having a porous elemental lead layer.
A porous lead dioxide electrode made by a process comprising:
- providing a plastic grid;
- coating the plastic grid with a very thin layer of conductive acid resistant base metal;
- coating the conductive acid resistant base metal layer of the grid with a thin layer of lead;
- covering the layer of lead coated on the conductive acid resistant base metal layer with a paste containing a halogenated lead compound;
- submerging the paste-covered grid in an electrically conductive solution;
- providing an anode in the solution which is electrically coupled to the paste covered grid;
- and
- reducing the halogenated lead compound to form a porous elemental lead layer;
- and thereafter
- submerging the porous lead electrode in a hydrochloric acid solution and electrically oxidizing the porous lead electrode to form a porous lead dioxide electrode.
Dependencies are inferred from the claim text.