Process for manufacturing an elementary gas-electrode electrochemical cell of the metal-gas type and associated cell

A method for manufacturing an elementary gas-electrode electrochemical cell of metal-gas type, configured to be integrated in an electrochemical assembly module of an energy storage system, including an electrochemical core including at least one negative electrode and at least one positive electrode, the at least one negative electrode being a gas electrode layer and the at least one positive electrode being a metal electrode or vice-versa, the method comprising:

• producing the electrochemical core of the cell by stacking of a plurality of layers, including at least one negative electrode layer, a positive electrode layer, and a layer of electrolyte;
• and
• disposing a separation layer between the stacks of the layers of the electrochemical core of the cell to form gas circulation spaces for conveying the gas to the gas electrode layer or layers,
• wherein the electrochemical core is produced by successive superimposition, on both sides of a metal negative electrode layer, comprised of a sheet of copper and a sheet of metal lithium covered with a protective membrane, of an assembly formed by
• a layer of electrolyte, comprised of a layer of separator soaked in electrolyte, and
• a positive gas electrode layer, comprised of a nickel grille covered with a layer of gas diffusion layer (GDL) type promoting diffusion of the gas evenly on a surface of the positive electrode.

A method for manufacturing an elementary gas-electrode electrochemical cell of metal-gas type, configured to be integrated in an electrochemical assembly module of an energy storage system, including an electrochemical core including at least one negative electrode and at least one positive electrode, the at least one negative electrode being a gas electrode layer and the at least one positive electrode being a metal electrode or vice-versa, the method comprising:

• producing the electrochemical core of the cell by stacking of a plurality of layers, including at least one negative electrode layer, at least two positive electrode layers, and a layer of electrolyte;
• and
• disposing a separation layer between the at least two positive electrode layers of the electrochemical core of the cell to form gas circulation spaces for conveying the gas to the gas electrode layers,
• wherein the electrochemical core is produced by successive superimposition, on a side of each positive gas electrode layer, comprised of a nickel grille covered with a layer of gas diffusion layer (GDL) type promoting diffusion of gas evenly on a surface of the positive electrode, of an assembly formed by
• an electrolyte layer, comprised of a layer of separator soaked in electrolyte, and
• a metal negative electrode layer, comprised of a sheet of copper and a sheet of metal lithium covered with a protective membrane.