Battery element containing efficiency improving additives
AssigneeEnsci, Inc.
InventorThomas J. Clough
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Abstract
A battery element of a lead acid battery including a negative plate, a positive and a separator having an organic polymer having phosphonic functionality in the negative plate to improve capacity maintenance.
Claims27
A battery element useful as at least a portion of a negative plate in a lead acid battery comprising a negative active material, an organic sulfonic acid polymeric expander component and an acid resistant amount of a porous organic polymer having a plurality of phosphonic functional groups provided that at least a portion of said organic polymer is incorporated into said negative active material.
A battery element useful as at least a portion of a negative plate in a lead acid battery comprising a negative active material, an organic sulfonic polymeric expander component, an acid resistant amount of a porous organic polymer having a plurality of phosphonic functional groups provided that at least a portion of said organic polymer is incorporated into said negative active material and macroporous additive particles with a reduced affinity for bonding with the negative active material for promoting electrolyte diffusion to the expander component and the porous organic polymer.
Dependencies are inferred from the claim text.