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US 7,405,014 B2Granted
Tab system for a metal-air electrochemical cell
AssigneeEveready Battery Company, Inc.
InventorsBrandon A. Bartling, Timothy D. Foley
Life of this patent
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Abstract
Various embodiments of a metal-air cell having a tab system that covers an air entry port of the metal-air cell are provided. In one representative embodiment the tab system includes polymer layer and an adhesive layer between the metal-air cell and the polymer layer. The tab system has a loss stiffness of less than 55,000 N/m at 20° C. to 25° C.
Claims32
A metal-air cell comprising:
- at least one air entry port along an exterior surface of the cell;
- and
- a tab system that covers the at least one air entry port, the tab system comprising at least a first polymer layer, a second polymer layer, a first adhesive layer disposed between the exterior surface of the metal air cell and the first polymer layer, and a second adhesive layer between the first polymer layer and the second polymer layer, wherein:
- the first polymer layer and the second polymer layer are both biaxially oriented;
- the tab system has a loss stiffness that is from about 25,000 N/m to less than about 55,000 N/m at 20° C. to 25° C.;
- the tab system has an oxygen permeability of from about 50 (cm3×m×mm Hg)/(m2×day) to about 150 (cm3×m×mm Hg)/(m2×day);
- and
- the cell comprises zero added mercury.
5 more elements
A metal-air cell comprising:
- at least one air entry port along an exterior surface of the cell;
- a tab system that covers the at least one air entry port, the tab system comprising:
- a first polymer layer;
- a second polymer layer;
- a first adhesive layer disposed between the external surface of the cell and the first polymer layer;
- a second adhesive layer between the first polymer layer and the second polymer layer;
- wherein
- the first polymer layer and the second polymer layer are both biaxially oriented;
- the tab system has a loss stiffness that is from about 25,000 N/m to less than about 55,000 N/m at 20° C. to 25° C.
- the tab system has an average burst pressure of from about 43 psi to 60 psi;
- the tab system has an oxygen permeability of from about 50 (cm3×m×mm Hg)/(m2×day) to about 150 (cm3×m×mm Hg)/(m2×day);
- and
- the cell comprises zero added mercury.
10 more elements
A metal-air cell comprising:
- at least one air entry port along an exterior surface of the cell;
- and
- a tab system that covers the at least one air entry port, the tab system comprising:
- a first polymer layer;
- a second polymer layer:
- a first adhesive layer disposed between the surface of the metal air cell and the first polymer layer;
- and
- a second adhesive layer between the first polymer layer and the second polymer layer;
- wherein:
- the first polymer layer and the second polymer layer are both biaxially oriented;
- the tab system has a loss stiffness that is from about 25,000 N/m to less than about 55,000 N/m at 20° C. to 25° C., an average burst pressure of from about 43 psi to 60 psi, a peel strength that ranges from about 6.5 psi to about 11 psi and an oxygen permeability of from about 50 (cm3×m×mm Hg)/(m2×day) to about 150 (cm3×m×mm Hg)/(m2×day);
- and
- the cell comprises zero added mercury.
10 more elements
A metal-air cell comprising:
- at least one air entry port along an exterior surface of the cell;
- a tab system that covers the at least one air entry port, the tab system comprising:
- a first polymer layer;
- a second polymer layer;
- a first adhesive layer disposed between the external surface of the metal air cell and the first polymer layer;
- and
- a second adhesive layer between the first polymer layer and the second polymer layer;
- wherein:
- the first polymer layer and the second polymer layer are both biaxially oriented;
- the tab system has a loss stiffness that is from about 25,000 N/m to less than about 55,000 N/m at 20° C. to 25° C., an average burst pressure of from about 43 psi to 60 psi, a peel strength that ranges from about 6.5 psi to about 11 psi, and an oxygen permeability of from about 50 (cm3×m×mm Hg)/(m2×day);
- the cell comprises an active material which comprises zinc and an electrolyte that comprises potassium hydroxide and has an open circuit voltage that ranges from about 1.18 volts to about 1.37 volts;
- and
- the cell comprises zero added mercury.
10 more elements
Dependencies are inferred from the claim text.