A hybrid system for producing electricity by a metal air cell and for utilizing hydrogen released during the operation of the metal air cell for producing energy in the form of electricity mechanical power or heat energy. The hybrid electric energy system includes at least one metal air cell and at least one hydrog...

A system and method for controlling operation a metal air battery are provided. A system and method for controlling operation a metal air battery may include controlling a current drawn from the battery; and controlling a temperature of the battery. A system and method may draw a preconfigured amount of power from a...

System and method for connection of a substitute load in batteries that are adapted to provide electrical power to an external power consuming unit. The batteries are connected to an electrical power consuming element, that is connectable to the batteries in case of undesired disconnection of the external power cons...

Methods of producing high purity powders of submicron particles of metal oxides are presented. The methods com prise providing or forming an alloy of a first metal with a second metal, optionally heating the alloy, subjecting the alloy to a leach - ing agent to remove the second metal from the alloy and to oxidize...

The Invention provides a zinc air cell comprising at least one zinc incorporating structure at least one oxygen evolving structure and at least one air electrode; wherein said zinc air cell comprises a first pair of electrodes for the charging of said air cell said electrode pair comprising said at least one zinc in...

A method for renovation of a consumed anode in a metal-air cell without dismantling the cell comprises 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...

A method and system for creating low corrosion passivation layer on an anode in a metal-air cell comprise asserting high negative potential and low drawn current density on the cell after its operational parameters have stabilized after the cell has been powered-on. As a result the H2 evolution rate momentarily rais...

Powders, electrodes, zinc-air batteries and corresponding methods are provided. Powders comprise perforated shells having a size of at least 100nm and comprising openings smaller than 10nm. The shells are electrically conductive and/or comprise an electrically conductive coating. Powders further comprise zinc and/or...

Rechargeable batteries and corresponding methods are provided, in which zinc dendrite growth to a compartment between a zinc -based anode and a separator of a rechargeable battery is limited, by preventing zincate anions from diffusing outside of the compartment. Separators limiting dendrite growth may comprise ion-...

Methods and systems are provided, which convert spent electrolyte from aluminum- air batteries into high purity alumina (HP A) and useful co-products such as fertilizer(s) and/or feed supplement(s). Aluminum tri-hydroxide (ATH) having potassium (K) and/or sodium (Na) impurities, e.g., from spent electrolyte, may be ...

Separators, electrochemical cells and methods are provided, to improve operation of cells such as metal-ion batteries and fuel cells. Separators comprise a porous, ionically conductive film including layered double hydroxide(s) (LDHs), which are functional ceramic additives, removing potentially harmful anions from ...

A system and a method for heating a componenet of an electric vehicle may be particularly beneficial in cold weather places and/or during winter time. The vehicle may be primarily powered by a main battery. The system may include a supplementary battery being metal air battery including an electrolyte for extending ...

Methods and systems for electrolyte regeneration are provided, which regenerate a spent alkaline electrolyte (SE) comprising dissolved aluminum hydrates from an aluminum-air battery, by electrolysis, to precipitate aluminum tri-hydroxide (ATH) and form regenerated alkaline electrolyte, and adding a same-cation salt ...

A system and method for controlling operation a metal-air battery are provided. A system and method for controlling operation a metal-air battery may include controlling a current drawn from the battery; and controlling a temperature of the battery. A system and method may draw a preconfigured amount of power from a...

Metal-air cells, battery stacks, battery system and methods of forming the anodes within the metalair cells without dismantling the cell are provided. The anodes include metal mesh(es) as current collector(s) and concentrated slurry comprising metal granules suspended in electrolyte, in electrical contact with the c...

Systems and methods of operating aluminum-air electrochemical cells are provided, in which, following operation of the electrochemical cell(s), the alkaline electrolyte is removed from the cell(s) and a mixture of water with oxygen-rich organic solvent(s) is introduced to protect the aluminum anodes from corrosion b...