Method for making lead oxide for lead-acid batteries
AssigneeJohnson Controls Technology Company
InventorsGlenn Trischan, Richard Binder, Michele Sick, Christian Hansen, David Wynn, Thomas Brossman
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Abstract
A method of producing lead oxide for use with lead-acid batteries includes providing a material comprising lead and adding calcium to the material at a level between approximately 100 and 400 ppm to form a lead-calcium alloy. The method further includes oxidizing the lead-calcium alloy to form lead oxide.
Claims35
A method of producing lead oxide for use with lead-acid batteries comprising:
- providing a material comprising lead;
- adding calcium to the material at a level between approximately 100 and 400 ppm to form a lead-calcium alloy;
- and
- oxidizing the lead-calcium alloy to form lead oxide.
A method for making lead oxide for use in lead-acid battery active material comprising:
- oxidizing a material comprising lead, calcium, and silver to form lead oxide, wherein the calcium is present in the material in an amount between approximately 100 and 400 ppm.
A method for preparing electrodes for use in a lead-acid battery comprising:
- preparing a material comprising lead and between approximately 100 and 400 ppm calcium;
- oxidizing the material to form lead oxide;
- and
- mixing the oxidized material with water and acid to produce a paste.
A method of enhancing the oxidation of lead during production of lead-acid batteries comprising alloying between about 100 and 400 ppm calcium with the lead and subjecting the resulting alloy to oxidizing conditions.
In a method of oxidizing lead used in production of lead-acid batteries, the improvement comprising effecting oxidation after alloying between approximately 100 and 400 ppm calcium into the lead.
A method of producing lead oxide from lead alloys containing silver for use in a lead acid battery electrode comprising alloying calcium into the silver-containing lead and subjecting the resultant alloy to oxidizing conditions.
Dependencies are inferred from the claim text.