Abstract: The present disclosure generally relates to a zinc air cell having an anode can made of a copper alloy. The anode can material reduces internal gassing within the electrochemical cell while being compatible with the internal chemistry of the anode and the alkaline electrolyte of the cell itself.

Abstract: An oxygen reduction electrode, e.g., an air cathode, comprising manganese oxides having octahedral molecular sieve structures as active catalyst materials and use of such an electrode as a component of a metal-air cell.

Abstract: An oxygen reduction electrode, e.g., an air cathode, comprising manganese oxides having octahedral molecular sieve structures as active catalyst materials and use of such an electrode as a component of a metal-air cell.

Abstract: An oxygen reduction electrode, e.g., an air cathode, comprising manganese oxides having octahedral molecular sieve structures as active catalyst materials and use of such an electrode as a component of a metal-air cell.

Abstract: An oxygen reduction electrode, e.g., an air cathode, comprising manganese oxides having octahedral molecular sieve structures as active catalyst materials and use of such an electrode as a component of a metal-air cell.

Abstract: A metal-air electrochemical cell that includes spun mercury-amalgamated zinc powder particles is disclosed. The mercury-amalgamated zinc powder particles have advantageous physical properties that improve the performance characteristics of the cell including increasing the rate capability while decreasing the failure rate of the cell from buildup of hydrogen gas in the cell.

Abstract: A metal-air electrochemical cell that includes spun mercury-amalgamated zinc powder particles is disclosed. The mercury-amalgamated zinc powder particles have advantageous physical properties that improve the performance characteristics of the cell including increasing the rate capability while decreasing the failure rate of the cell from buildup of hydrogen gas in the cell.

Abstract: A sulfonic acid type organic surfactant is incorporated into the gelled anode mixture of an alkaline electrochemical cell, optionally with an organic phosphate ester surfactant. Zinc fines may also be incorporated into the anode. The electrolyte included in the anode mixture may have a reduced hydroxide concentration. When a cell is provided whose anode mixture includes the two surfactants and zinc fines alone or in combination with a lowered hydroxide concentration in the electrolyte, discharge leakage is reduced and gel gassing is suppressed relative to that of gels lacking both surfactants. Additionally, cell discharge performance is improved relative to that of cells lacking both the zinc fines and lowered hydroxide concentration.

Abstract: A battery pack suitable for use with button cell batteries. The battery pack includes a flexible card and a cover rotatably fixed relative to said flexible card. A backing is interposed between the card and said cover, and fixed relative to said card. The backing and cover define an enclosed space interposed between the cover and the backing for receiving batteries. Batteries disposed in the space are enclosed by the cover and backing. An air access channel formed in the backing diffuses air to the batteries.

Abstract: A sulfonic acid type organic surfactant is incorporated into the gelled anode of an alkaline electrochemical cell, optionally with an organic phosphate ester surfactant. When the two surfactants are provided in a gelled anode in combination, discharge leakage is reduced and gel gassing is suppressed relative to that of gels lacking both surfactants. Additionally, cell discharge performance is improved relative to that of cells lacking both surfactant additives.

Abstract: A screen for an electrochemical cell is fabricated by providing an interwoven wire mesh, and electroplating nickel onto the mesh, which bonds with the joints to create a screen usable with an electrochemical cell. The mesh can first be rolled to partially bond the wires prior to the electroplating step.

Abstract: A sulfonic acid type organic surfactant is incorporated into the gelled anode mixture of an alkaline electrochemical cell, optionally with an organic phosphate ester surfactant. Zinc fines may also be incorporated into the anode. The electrolyte included in the anode mixture may have a reduced hydroxide concentration. When a cell is provided whose anode mixture includes the two surfactants and zinc fines alone or in combination with a lowered hydroxide concentration in the electrolyte, discharge leakage is reduced and gel gassing is suppressed relative to that of gels lacking both surfactants. Additionally, cell discharge performance is improved relative to that of cells lacking both the zinc fines and lowered hydroxide concentration.

Abstract: A battery pack suitable for use with button cell batteries. The battery pack includes a flexible card and a cover rotatably fixed relative to said flexible card. A backing is interposed between the card and said cover, and fixed relative to said card. The backing and cover define an enclosed space interposed between the cover and the backing for receiving batteries. Batteries disposed in the space are enclosed by the cover and backing. An air access channel formed in the backing diffuses air to the batteries.

Abstract: A sulfonic acid type organic surfactant is incorporated into the gelled anode of an alkaline electrochemical cell, optionally with an organic phosphate ester surfactant. When the two surfactants are provided in a gelled anode in combination, discharge leakage is reduced and gel gassing is suppressed relative to that of gels lacking both surfactants. Additionally, cell discharge performance is improved relative to that of cells lacking both surfactant additives.

Abstract: A current interrupt mechanism for electrochemical cells is disclosed. A thermally activated current interrupt mechanism is integrated into an end cap assembly for an electrochemical cell. The thermally responsive mechanism preferably includes a free floating bimetallic disk or shape memory alloy member which deforms when exposed to elevated temperature causing a break in an electrical pathway within the end cap assembly. This prevents current from flowing through the cell and effectively shuts down an operating cell. The thermally responsive mechanism may include a heat producing electrical resistance means, preferably a Zener diode, to enhance thermal sensitivity. The end cap assembly may include a pressure responsive mechanism which ruptures when there is extreme gas pressure buildup. Gas is allowed to escape from the cell interior to the external environment through a series of vent apertures within the end cap assembly.

Abstract: A current interrupt assembly for electrochemical cells is disclosed. The current interrupter assembly may be a self-contained, sealed unit which may be separately inserted into the cell during cell construction. Several current interrupt assemblies may be inserted in the cell. The current interrupter assembly has particular utility for thin rechargeable cells and when inserted in the cell forms a portion of the electrical pathway between a cell electrode and corresponding terminal. The current interrupt mechanism comprises a thin thermally responsive member preferably comprising a disk of a shape memory metal alloy having a curved surface. The current interrupt mechanism may include a heat producing electrical resistance means, preferably a Zener diode in proximity to the thermally responsive member. When cell temperature exceeds a predetermined value the disk deflects to cause a break in the electrical pathway within the assembly.