The embodiments herein disclose a system (1000) for managing electrical connections with electrodes in a metal-air fuel cell. The system (1000) includes a cell frame (101) and one or more anode array (102). The one or more anode array (102) is detachably provided with the cell frame (101). The one or more anode array (102) comprises one or more anode. One or more air cathode (103) is provided with the cell frame (101). One or more connector (105) connects the one or more air cathode (103) and the one or more anode array (102). A snap mechanism (106) is used for locking and unlocking the one or more anode array (102) to the cell frame (101).

A zinc-air battery cell assembly comprising: a cathode can that includes: a planar base, and an elongated cathode sidewall that extends to a terminal cathode sidewall end, and an anode can that includes: a planar top end, and an elongated anode sidewall that extends to a terminal anode sidewall end, the anode can disposed nested within the cathode can with the elongated anode sidewall disposed parallel and adjacent to the elongated cathode sidewall. The zinc-air battery assembly further includes a cavity defined by the cathode can and the anode can disposed nested within the cathode can, and a grommet that provides a seal between the cathode can and the anode can while also keeping the anode can and the cathode can separate.

Provided is an air electrode or water electrolysis anode showing a higher catalytic activity than carbon black and not having a risk of oxidative degradation, in particular, an air electrode or water electrolysis anode for a metal-air battery or a water electrolysis apparatus. The air electrode or water electrolysis anode includes an electron-conductive material represented by LaNi.sub.1−x−yCu.sub.xFe.sub.yO.sub.3−δ (where x>0, y>0, x+y<1, and 0≦δ≦0.4).

This invention is related to a type of Air Metal Fuel Cell. The Air Metal Fuel Cell in this invention is made of a positive air electrode, metal negative electrode, membrane/membrane bag, siphon material, electrolyte, mandrel, shockproof buffer layer, cathode electrolyte, positive electrolyte, battery shell and supporting fixing device. There is a hydrophobic structure layer between the positive and negative electrodes. The advantages of the invented cell include high energy density, low production costs, and superior safety and reliability.

A three-dimensional electrode array for use in electrochemical cells, fuel cells, capacitors, supercapacitors, flow batteries, metal-air batteries and semi-solid batteries.

An electrochemical device includes an air cathode; a lithium-containing anode metal; a porous separator; and a non-aqueous electrolyte comprising a lithium salt, a sodium salt, and a solvent; wherein the electrochemical device is a lithium-air battery. A total concentration of the lithium salt and the sodium salt in the non-aqueous electrolyte may be from about 0.001 M to about 7 M.

A method of: providing an emulsion having a zinc powder and a liquid phase; drying the emulsion to form a sponge; sintering the sponge in an inert atmosphere to form a sintered sponge; heating the sintered sponge in an oxidizing atmosphere to form an oxidized sponge having zinc oxide on the surface of the oxidized sponge; and heating the oxidized sponge in an inert atmosphere at above the melting point of the zinc. A method of: providing an emulsion comprising a zinc powder and a liquid phase; placing the emulsion into a mold, wherein the emulsion is in contact with a metal substrate; and drying the emulsion to form a sponge.

A layer combination for an electrode can be used in rechargeable electrochemical cells. The rechargeable electrochemical cells are in the form of lithium batteries, e.g. a lithium-sulfur battery or a lithium-oxygen battery. The layer combination includes at least one superhydrophobic, nanostructured protective layer which repels polar substances.

An assembled battery includes a plurality of air cells arranged in a horizontal direction and a plurality of connection flow paths. Each air cell includes a storage portion between a positive electrode and a metal negative electrode to store an electrolysis solution. The storage portions of the respective adjacent air cells communicate with each other by the respective connection flow paths. An insulation fluid for electrically insulating the electrolysis solution in the respective adjacent air cells is sealed in the respective connection flow paths.

A method for renovation of a consumed anode in a metal-air cell without dismantling the cell according to embodiments of the present invention comprising circulating electrolyte through the cell to evacuate used slurry from the cell, circulating electrolyte with fresh slurry into the cell and allowing sedimentation of the fresh slurry inside the cell to form an anode and compacting the slurry to reduce the gaps between its particles. A meta-air cell enabling renovation of a consumed anode without dismantling the cell defining first outer face of the cell, air cathode layer adjacent the porous wall, separator wall disposed on the inner face of the air cathode layer, cell space volume to contain electrolyte and metal granules slurry, current collector layer to form an anode, made of current conductive material disposed in the space and flexible wall defining a second outer face of the cell wherein the flexible wall is adapted to be pushed towards inside of the cell subject to pressure applied to its outer face, thereby to reduce the volume of the space.