Alkaline electrochemical cells are provided, wherein an organic additive is included in at least one component of the cell in order to increase electron discharge of the cathode, so as to improve the specific capacity of the cell. Methods for preparing such cells are also provided.

An alkaline electrochemical cell has a central cathode having a corresponding cathode current collector electrically connected with a positive terminal of the electrochemical cell. The cathode current collector has a tubular shape, such as a cylindrical shape or rectangular shape, extending parallel with the length of the central cathode. The cathode current collector is embedded within the central cathode, such as at a medial point of a radius of the central cathode, thereby minimizing the distance between the cathode current collector and any portion of the central cathode, thereby increasing the mechanical strength of the cathode and facilitating charge transfer to the cathode current collector.

A zinc-air battery cell assembly comprising: a layer of anode material; one or more layers of cathode material; a separator directly between and engaging both the layer of anode material and the layer of cathode material that acts as both an electronic insulator and an ion conductive path between the layer of anode material and the layer of cathode material; and a diffusion member directly engaging the layer of cathode material.

A battery includes an air cathode, an anode, an aqueous electrolyte, and a housing, wherein, the housing includes one or more air access ports defining a total vent area, the battery exhibit a current density, a ratio of current density to total vent area is greater than about 100 mA/mm.sup.2, and the aqueous electrolyte comprises an amphoteric fluorosurfactant.

Alkaline electrochemical cells are provided, wherein a conductive carbon is included in the cell's cathode in order to decrease resistivity of the cathode, so as to improve the discharge of the cell, particularly in high drain applications. The conductive carbon may comprise carbon nanotubes and/or graphene. Methods for preparing such cells are also provided.

The present technology provides a battery that includes an air cathode, an anode, an aqueous electrolyte that includes an amphoteric surfactant, and a housing that includes one or more air access ports defining a total area of void space (“vent area”), where (1) the battery is a size 13 metal-air battery and the total vent area defined by all of the air access ports is from about 0.050 mm.sup.2 to about 0.115 mm.sup.2; or (2) the battery is a size 312 metal-air battery and the total vent area defined by all of the air access ports is from about 0.03 mm.sup.2 to about 0.08 mm.sup.2.

A nozzle is provided for providing anode material into an electrochemical cell and method of using the same. The nozzle comprises a hollow tubular body extending between an open upper end and an open lower end; a lower deflector spaced apart from the open lower end of the hollow tubular body and forming an annular opening between a deflection surface of the lower deflector and the open lower end of the hollow tubular body; and a support rod connecting the lower deflector with the hollow tubular body, wherein the support rod is suspended within an interior of the hollow tubular body by one or more support trusses.

A battery includes an air cathode, an anode, an aqueous electrolyte, and a housing, wherein, the housing includes one or more air access ports defining a total vent area, the battery exhibit a current density, a ratio of current density to total vent area is greater than about 100 mA/mm.sup.2, and the aqueous electrolyte comprises an amphoteric fluorosurfactant.

A printed battery that supplies a transmission and/or reception unit of an RFID tag with an electrical current of at peak ≥ 400 mA includes a layer stack having an anode configured as a layer that contains particulate metallic zinc or a particulate metallic zinc alloy as an active electrode material and a first resilient binder or binder mixture, and a cathode configured as a layer that contains a particulate metal oxide as an active electrode material, at least one conductivity additive to control the electrical conductivity of the cathode, and a second resilient binder or binder mixture, and a separator configured as a layer that electrically insulates the anode and the cathode from one another, a first electrical conductor in direct contact with the anode, and a second electrical conductor in direct contact with the cathode, and a housing that encloses the layer stack.

An electrochemical system, the system including an aqueous electrolyte, at least one chelating agent configured to bind to at least one detrimental ionic species, and a particulate precipitation site. A method of forming an electrochemical system including creating a housing with an interior volume, placing at least one electrode within the interior volume, adding at least one chelating agent configured to bind to at least one detrimental ionic species into the interior volume, and adding a particulate precipitation site to the interior volume.