Battery paste adhesion process for batteries
AssigneeWirtz Manufacturing Company, Inc.
InventorsRoel Mendoza, Márcio Rocha
Life of this patent
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Abstract
A method of making substrates, such as grids, for assembly with lead-acid batteries is set forth herein. The grids can take the form of a strip of a multitude of serially-connected metal grids. The grids can ultimately be employed as positive electrodes or negative electrodes in a larger lead-acid battery assembly. Surfaces of the grids can be contacted with an aqueous solution, such as submergence in a bath thereof, as an example. The aqueous solution can comprise hydrogen peroxide.
Claims11
A method of forming a group of plates for cells of a lead-acid battery, the method comprising:
- forming a lead or a lead-based alloy sheet layer of interconnected, but separable, grids for the positive electrodes or the negative electrodes of lead-acid batteries, the sheet layer being formed using a casting process, or the combination of a casting process and a subsequent step of machine shaping of a cast sheet, the forming steps utilizing a carbon-containing lubricant such that a residue of the lubricant remains on surfaces of the sheet layer of interconnected grids;
- contacting the surfaces of the sheet layer with an aqueous solution consisting essentially of hydrogen peroxide in water so as to remove the lubricant residue from the surfaces of the sheet layer of interconnected grids and to oxidize the lead or lead-based alloy grids, the oxidized surfaces of the grids being characterized by the presence of at least one of lead hydroxide and a lead oxide;
- drying the surfaces of the sheet using atmospheric air;
- and
- applying a paste of precursors of active electrode material to the oxidized grid surface.
A method of making substrates for use in batteries, the method comprising:
- providing an elongate strip of substrates, at least a portion of said substrates composed of a lead or lead-alloy material;
- and
- contacting said substrates with an aqueous solution of hydrogen peroxide.
Dependencies are inferred from the claim text.