Optimised energy storage device having capacitor material on lead based negative electrode
First Claim
1. A lead-acid battery comprising:
- at least one negative electrode comprising lead-based battery electrode material and at least one region of capacitor material overlying the lead-based battery electrode material, each electrode being in electrical connection to an outer terminal of the battery, andat least one positive electrode which is a lead-dioxide based battery electrode without a capacitor material, each positive electrode being in electrical connection to a second outer terminal of the battery,separator interleaving the facing electrodeselectrolyte filling at least the space of the electrodes and separatorswherein the capacitor material overlying the lead-based battery electrode material comprises 34-65% by weight of a high electrical conductivity carbonaceous material, 35-52% of a high specific surface area carbonaceous material, at least 0.1% lead and binder, andwherein the capacitor material of each negative electrode constitutes between 1 and 15% by weight of the lead-based battery electrode material.
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Accused Products
Abstract
A lead-acid battery comprising: —at least one negative electrode comprising lead-based battery electrode material and at least one region of capacitor material overlying the lead-based battery electrode material, each electrode being in electrical connection to an outer terminal of the battery, and —at least one positive lead-dioxide based battery electrode, each positive electrode being in electrical connection to a second outer terminal of the battery, —separator interleaving the facing electrodes; —electrolyte filling at least the space of the electrodes and separators wherein the capacitor material overlying the lead-based battery electrode material comprises 20-65% by weight of a high electrical conductivity carbonaceous material, 30-70% of a high specific surface area carbonaceous material, at least 0.1% lead and binder.
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Citations
25 Claims
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1. A lead-acid battery comprising:
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at least one negative electrode comprising lead-based battery electrode material and at least one region of capacitor material overlying the lead-based battery electrode material, each electrode being in electrical connection to an outer terminal of the battery, and at least one positive electrode which is a lead-dioxide based battery electrode without a capacitor material, each positive electrode being in electrical connection to a second outer terminal of the battery, separator interleaving the facing electrodes electrolyte filling at least the space of the electrodes and separators wherein the capacitor material overlying the lead-based battery electrode material comprises 34-65% by weight of a high electrical conductivity carbonaceous material, 35-52% of a high specific surface area carbonaceous material, at least 0.1% lead and binder, and wherein the capacitor material of each negative electrode constitutes between 1 and 15% by weight of the lead-based battery electrode material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21, 25)
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18. A lead-acid battery comprising:
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at least one negative electrode comprising lead-based battery electrode material and at least one region of capacitor material overlying the lead-based battery electrode material, each electrode being in electrical connection to an outer terminal of the battery, and at least one positive lead-dioxide based battery electrode without a capacitor material, each positive electrode being in electrical connection to a second outer terminal of the battery, separator interleaving the facing electrodes electrolyte filling at least the space of the electrodes and separators wherein the capacitor material overlying the lead-based battery electrode material comprises 34-65% by weight of a high electrical conductivity carbonaceous material, 35-52% of a high specific surface area carbonaceous material, at least 0.1% lead and binder, and a polymeric fiber reinforcement material in an amount up to 10% by weight, and wherein the capacitor material of each negative electrode constitutes between 1 and 15% by weight of the lead-based battery electrode material. - View Dependent Claims (22)
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19. A lead-acid battery comprising:
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at least one negative electrode comprising lead-based battery electrode material and at least one region of capacitor material overlying the lead-based battery electrode material, each electrode being in electrical connection to an outer terminal of the battery, and at least one positive lead-dioxide based battery electrode without a capacitor material, each positive electrode being in electrical connection to a second outer terminal of the battery, separator interleaving the facing electrodes electrolyte filling at least the space of the electrodes and separators wherein the capacitor material overlying the lead-based battery electrode material comprises 34-65% by weight of a high electrical conductivity carbonaceous material, 35-52% of a high specific surface area carbonaceous material, at least 0.1% lead and binder, and a non-conductive polymeric fiber reinforcement material in an amount up to 10% by weight, and wherein the capacitor material of each negative electrode constitutes between 1 and 15% by weight of the lead-based battery electrode material. - View Dependent Claims (23, 24)
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Specification