Battery element containing efficiency improving additives
AssigneeEnsci, Inc.
InventorThomas J. Clough
Life of this patent
Estimating the term…
Abstract
A battery element of a lead acid battery including a negative plate, a positive plate and a separator having a metal inhibiting additive associated with a plate that reduces the detrimental effects of at least one impurity on the negative plate.
Claims26
A battery element useful as a plate in a lead acid battery comprising a separator, active material, sulfuric acid electrolyte and an acid resistant metal impurity inhibiting amount of macroporous organic polymer particles having functional groups on the internal surfaces of the porous particles which have a preferential affinity over lead ion for at least one electrolyte soluble metal impurity ion more nobler than lead at the discharge charge electrochemical and sulfuric acid molarity conditions of the battery provided that the metal impurity ion is not substantially detrimentally desorbed or released from the functional groups under said conditions, soluble lead ion has a substantially reduced affinity for bonding with the functional groups and said organic macroporous polymer is associated with said active material and in contact with the metal impurity ion containing electrolyte to allow said ion to substantially permeate the internal surface of the macroporous polymer.
A battery element useful as a negative plate in a recombinant lead acid battery comprising a fiber mat separator, positive and negative active material, sulfuric acid electrolyte and an acid resistant metal impurity inhibiting amount of macroporous organic polymer particles having functional groups on the internal surfaces of the porous particles which have a preferential affinity over lead ion for at least one electrolyte soluble metal impurity ion more nobler than lead at the discharge charge electrochemical and sulfuric acid molarity conditions of the battery provided that the metal impurity ion is not substantially detrimentally desorbed or released from the functional groups under said conditions, soluble lead ion has a substantially reduced affinity for bonding with the functional groups and said organic macroporous polymer is associated with said negative active material and in contact with the metal impurity ion containing electrolyte to allow said ion to substantially permeate the internal surface of the macroporous polymer.
A battery element useful as a negative plate in a lead acid battery comprising a separator having positive and negative active material, sulfuric acid electrolyte and an acid resistant metal impurity inhibiting amount of macroporous organic polymer particles having functional groups on the internal surfaces of the porous particles which have a preferential affinity over lead ion for at least one electrolyte soluble metal impurity ion more nobler than lead at the discharge charge electrochemical and sulfuric acid molarity conditions of the battery provided that the metal impurity ion is not substantially detrimentally desorbed or released from the functional groups under said conditions, soluble lead ion has a substantially reduced affinity for bonding with the functional groups and said organic macroporous polymer is associated with said negative active material and in contact with the metal impurity ion containing electrolyte to allow said ion to substantially permeate the internal surface of the macroporous polymer.
Dependencies are inferred from the claim text.