Abstract: An elongate, generally tubular, air depolarized electrochemical cell (10) comprising a cathode (14), including an air cathode assembly (26), extending about the tubular circumference, and along the tubular length, of the cell (10), an anode (12), a separator (16) between the anode (12) and the cathode (14), electrolyte, a top closure member (177, 200), and a bottom closure member (114, 202). The cathode assembly (26) is fixedly held, by a friction fit, in a slot (116) at the bottom of the cell. The slot can be developed, for example, by inner (110) and outer (114) walls of a cathode can (28), by inner (226) and outer (224) walls of a bottom closure member (202), or by an outer wall (114) of a cathode can (28) and an opposing outer wall of a plug (128) on the interior of the cell.

Abstract: An elongate, generally tubular, air depolarized electrochemical cell (10) comprising a cathode (14), including an air cathode assembly (26), extending about the tubular circumference, and along the tubular length, of the cell (10), an anode (12), a separator (16) between the anode (12) and the cathode (14), electrolyte, a top closure member (177, 200), and a bottom closure member (114, 202). The cathode assembly (26) is fixedly held, by a friction fit, in a slot (116) at the bottom of the cell. The slot can be developed, for example, by inner (110) and outer (114) wars of a cathode can (28), by inner (226) and outer (224) walls of a bottom closure member (202), or by an outer wall (114) of a cathode can (28) and an opposing outer wall of a plug (128) on the interior of the cell.

Abstract: An air depolarized cell comprises an anode, a cathode, including an air cathode assembly openly exposed to the ambient environment and/or defining at least a portion of the outer surface of the cell. The cell can comprise a bottom member defining a bottom of the cell, and a top member defining a top of the cell, the air cathode assembly extending between the bottom member and the top member as the exposed or outer portion of the cell. An anode cavity can be disposed inwardly of the separator and upwardly of the bottom member, and contain a mass of electroactive anode material. An elongate anode current collector preferably extends into the anode material. The top member can comprise a top contour washer having inner and outer downwardly depending legs receiving an upper edge portion of the cathode assembly in a slot therebetween, and an insulating grommet in the slot, electrically insulating the cathode assembly from the top contour washer and sealing against liquid leakage out of the cell through the slot.

Abstract: Cathode assembly precursor cathode assembly (26) and elongate air depolarized electrochemical cells (10) made therewith. Cathode assembly precursor comprises a closed-loop elongate cathode current collector (32), and perforations (56) from outer to inner surfaces, and catalystically active carbon extending into the perforations (56). The current collector (32) can be cylindrical and can be free from longitudinal jointing, or can have a longitudinal joint (54), preferably free from overlap of the side wall. The current collector (32) can comprise an imperforate edge region at the top (42) and/or bottom (44), left (48) and/or right (46) edge. The perforations (56) define an open traction of the wall, of about 45 to about 70 percent. Typical cathode assemblies (26) have air diffusion member (36) on the outer surface of the cathode assembly (26). Such air diffusion member (36) typically has thickness of about 0.0025 to 0.005 inch (about 0.06 to about 0.13 mm.

Abstract: This invention teaches an elongate air depolarized electrochemical cell. The cell has a cathode, including an air cathode assembly, and a separator disposed inwardly of the air cathode assembly. A bottom member defines a bottom of the cell. An anode cavity, defined inwardly of the separator and the bottom member, receives a mass of electroactive anode material. An elongate hollow tube anode current collector is in electroactive contact with the mass of electroactive anode material. The anode current collector preferably has an enlarged cross-section such that the average distance between the anode current collector and the separator is reduced, thereby to reduce the overall mass of electroactive anode material used in the cell.

Abstract: An elongate air depolarized electrochemical cell (10). A grommet (18) closes the top of the cell (10). A seal (36) can extend upwardly into a slot (174) between the grommet (18) and a top closure member (177) such as at the top of a cathode can (28), or a separate top closure member (200). Cathode assembly (26) and separator (16) can extend into the slot (174). The seal is between the grommet (18) and cathode assembly (26), or between grommet (18) and separator (16). or both. The seal can extend upwardly into the slot (174) from an outer surface of the cathode assembly (26), can extend about respective upper edges of the cathode current collector (57), catalyst, and separator (16), and downwardly toward, preferably against or along the inner surface of, the separator (16).

Abstract: An elongate, generally tubular, air depolarized electrochemical cell (10) comprising a cathode (14), including an air cathode assembly (26), extending about the tubular circumference, and along the tubular length, of the cell (10), an anode (12), a separator (16) between the anode (12) and the cathode (14), electrolyte, a top closure member (177, 200), and a bottom closure member (114, 202). The cathode assembly (26) is fixedly held, by a friction fit, in a slot (116) at the bottom of the cell. The slot can be developed, for example, by inner (110) and outer (114) walls of a cathode can (28), by inner (226) and outer (224) walls of a bottom closure member (202), or by an outer wall (114) of a cathode can (28) and an opposing outer wall of a plug (128) on the interior of the cell.

Abstract: An elongate, generally tubular, air depolarized electrochemical cell (10) comprising a cathode (14), including an air cathode assembly (26), extending about the tubular circumference, and along the tubular length, of the cell (10), an anode (12). a separator (16) between the anode (12) and the cathode (14), electrolyte, a top closure member (177, 200), and a bottom closure member (114, 202). The cathode assembly (26) is fixedly held, by a friction fit, in a slot (116) at the bottom of the cell. The slot can be developed, for example, by inner (110) and outer (114) walls of a cathode can (28), by inner (226) and outer (224) walls of a bottom closure member (202), or by an outer wall (114) of a cathode can (28) and an opposing outer wall of a plug (128) on the interior of the cell.

Abstract: An elongate, generally tubular, air depolarized electrochemical cell (10) comprising a cathode (14), including an air cathode assembly (26), extending about the tubular circumference, and along the tubular length, of the cell (10), an anode (12), a separator (16) between the anode (12) and the cathode (14), electrolyte, a top closure member (177, 200), and a bottom closure member (114, 202). The cathode assembly (26) is fixedly held, by a friction fit, in a slot (116) at the bottom of the cell. The slot can be developed, for example, by inner (110) and outer (114) walls of a cathode can (28), by inner (226) and outer (224) walls of a bottom closure member (202), or by an outer wall (114) of a cathode can (28) and an opposing outer wall of a plug (128) on the interior of the cell.