A metal-air battery includes an anode portion including a metal; a cathode portion including a porous layer, wherein the porous layer includes a reduced non-stacked graphene oxide; and an electrolyte disposed between the anode portion and the cathode portion.

A method of charging a metal-air fuel cell. The method includes a step of orienting an anode chamber horizontally. The method further method includes a step of providing metal particles suspended in an electrolyte to flow through the anode chamber in a downstream direction oriented horizontally. The method further method includes a step of allowing a bed of the metal particles to form on the anode current collector. The plurality of particle collectors perturb the flow of electrolyte through the anode chamber and encourage settling of the particles one of on and between the particle collectors. The method further method includes a step of maintaining uniform formation of the bed.

A method of charging a metal-air fuel cell. The method includes a step of orienting an anode chamber horizontally. The method further method includes a step of providing metal particles suspended in an electrolyte to flow through the anode chamber in a downstream direction oriented horizontally. The method further method includes a step of allowing a bed of the metal particles to form on the anode current collector. The plurality of particle collectors perturb the flow of electrolyte through the anode chamber and encourage settling of the particles one of on and between the particle collectors. The method further method includes a step of maintaining uniform formation of the bed.

A wire mesh including a warp which includes a first nickel alloy wire having a first peak tensile strength; and a weft which includes a wire including nickel having a second peak tensile strength, wherein the first peak tensile strength is greater than or equal to the second peak tensile strength, is provided. A current collector and a zinc-air battery that includes the wire mesh are also provided.

The invention provides a metal-air battery in which a metallic electrode can be smoothly inserted into a metal-air battery main body. The metal-air battery of the invention includes at least one cell. The cell includes an electrolytic tank that stores an electrolytic solution, a metallic electrode that is provided in the electrolytic tank and serves as an anode, at least one air electrode that serves as a cathode, an electrode insertion opening through which the metallic electrode is inserted into the electrolytic tank, and a position adjustment section. The position adjustment section is provided to adjust a position of the metallic electrode through contact between the metallic electrode and the position adjustment section during insertion of the metallic electrode into the electrolytic tank.

The invention provides a metal-air battery in which a metallic electrode can be smoothly inserted into a metal-air battery main body. The metal-air battery of the invention includes at least one cell. The cell includes an electrolytic tank that stores an electrolytic solution, a metallic electrode that is provided in the electrolytic tank and serves as an anode, at least one air electrode that serves as a cathode, an electrode insertion opening through which the metallic electrode is inserted into the electrolytic tank, and a position adjustment section. The position adjustment section is provided to adjust a position of the metallic electrode through contact between the metallic electrode and the position adjustment section during insertion of the metallic electrode into the electrolytic tank.

A zinc-air battery includes an air cathode, a zinc anode, and an electrolyte, wherein the electrolyte includes an amphoteric fluorosurfactant.

An expanded graphite sheet and a battery using the expanded graphite sheet are provided, that can inhibit the expanded graphite sheet from swelling even when the expanded graphite sheet is used for, for example, a positive electrode for an air battery. An expanded graphite sheet includes an expanded graphite and has a surface water contact angle of greater than or equal to 90 degrees and a surface resistivity of less than or equal to 70 mΩ/sq. It is desirable that a polyolefin resin be contained in the expanded graphite sheet in a dispersed state. It is desirable that the polyolefin resin be polypropylene.

A multi-faceted zinc-air electrochemical cell design holistically leverages interactions between components, especially with respect to conductive carbons from differing sources, lamination and the resulting impact it has on the air electrode's surface and other additives that impact the relative hydrophilicity of the membrane and/or performance of the anode, to improve the overall reliability and performance of the resulting battery.

A multi-faceted zinc-air electrochemical cell design holistically leverages interactions between components, especially with respect to conductive carbons from differing sources, lamination and the resulting impact it has on the air electrode's surface and other additives that impact the relative hydrophilicity of the membrane and/or performance of the anode, to improve the overall reliability and performance of the resulting battery.