Abstract: According to one aspect, a system for electrochemical power storage may include a plurality of instances of a metal-air battery, each instance of the metal-air battery including an air electrode, a metal electrode, and a liquid electrolyte separating the air electrode from the metal electrode with the air electrode and the metal electrode ionically coupled to one another via the liquid electrolyte; and a carbon dioxide removal system into which ambient air is directable, carbon dioxide from the ambient air removable in the carbon dioxide removal system to generate purified air, and the carbon dioxide removal system in fluid communication with the plurality of instances of the metal-air batteries such that the purified air is movable from the carbon dioxide removal system to the plurality of instances of the metal-air battery.

Abstract: Various embodiments relate to several processes that may recover commodity chemicals from an alkaline metal-air battery. In various embodiments, while the cell is operating, various side products and waste streams may be collected and processed to regain use or additional value. Various embodiments also include processes to be performed after the cell has been disassembled, and each of its electrodes have been separated such as not to be an electrical hazard. The alkaline metal battery recycling processes described herein may provide multiple forms of commodity iron, high purity transition metal ores, fluoropolymer dispersions, various carbons, commodity chemicals, and catalyst dispersions.

Abstract: Systems and methods of the various embodiments may provide decoupled electrode electrochemical energy storage systems.

Abstract: Systems and methods of the various embodiments may provide decoupled electrode electrochemical energy storage systems.

Abstract: Systems and methods of the various embodiments may provide metal electrodes for electrochemical cells. In various embodiments, the electrodes may comprise iron. Various methods may enable achieving high surface area with low cost for production of metal electrodes, such as iron electrodes.

Abstract: Systems and methods of the various embodiments may provide metal electrodes for electrochemical cells. In various embodiments, the electrodes may comprise iron. Various methods may enable achieving high surface area with low cost for production of metal electrodes, such as iron electrodes.

Abstract: According to one aspect, a system for electrochemical power storage may include at least one instance of a battery module, each instance of the battery module including a battery enclosure and a metal-air battery, the metal-air battery disposed in the battery enclosure; a reservoir including a volume of a liquid electrolyte; a supply conduit in fluid communication between the reservoir and the battery enclosure; a pump actuatable to move the liquid electrolyte from the reservoir into the battery enclosure via the supply conduit; and a return conduit in fluid communication between the battery enclosure and the reservoir, the liquid electrolyte movable from the battery enclosure to the reservoir, via the return conduit, with the metal-air battery immersed in the liquid electrolyte in the battery enclosure.

Abstract: Various embodiments relate to several processes that may recover commodity chemicals from an alkaline metal-air battery. In various embodiments, while the cell is operating, various side products and waste streams may be collected and processed to regain use or additional value. Various embodiments also include processes to be performed after the cell has been disassembled, and each of its electrodes have been separated such as not to be an electrical hazard. The alkaline metal battery recycling processes described herein may provide multiple forms of commodity iron, high purity transition metal ores, fluoropolymer dispersions, various carbons, commodity chemicals, and catalyst dispersions.

Abstract: Systems, methods, and devices for gas management of metal-air batteries. Each one of a plurality of electrochemical cells may include at least one air electrode, a metal electrode, a vessel, and a liquid electrolyte between the at least one air electrode and the metal electrode in the vessel, with each one of the plurality of electrochemical cells defining a respective headspace above the liquid electrolyte in the vessel. A manifold may include ducting defining a shared vent and an outlet region, and the respective headspace of each one of the plurality of electrochemical cells may be fluidically coupled to the shared vent and in fluid communication with the outlet region of the ducting.

Abstract: Various embodiments include processes for purifying and/or preparing iron-bearing materials. Various embodiments include purification and/or preparation of iron ores, iron, and their intermediates. Various embodiments include processes for purifying iron-bearing materials comprising leaching one or more soluble species of impurities out of iron-bearing materials using a leaching solution comprising fluorine.

Abstract: Various embodiments relate to several processes that may recover commodity chemicals from an alkaline metal-air battery. In various embodiments, while the cell is operating, various side products and waste streams may be collected and processed to regain use or additional value. Various embodiments also include processes to be performed after the cell has been disassembled, and each of its electrodes have been separated such as not to be an electrical hazard. The alkaline metal battery recycling processes described herein may provide multiple forms of commodity iron, high purity transition metal ores, fluoropolymer dispersions, various carbons, commodity chemicals, and catalyst dispersions.

Abstract: Systems and methods of the various embodiments may provide decoupled electrode electrochemical energy storage systems.

Abstract: Materials, designs, and methods of fabrication for hydrogen oxidation electrodes and electrochemical cells including the same are disclosed. In various embodiments, hydrogen oxidation catalysts and corresponding substrates are provided that enable electrochemical oxidation of hydrogen evolved at the anode of aqueous batteries.

Abstract: Materials, designs, and methods of fabrication for iron-manganese oxide electrochemical cells are disclosed. In various embodiments, the negative electrode is comprised of pelletized, briquetted, or pressed iron-bearing components, including metallic iron or iron-based compounds (oxides, hydroxides, sulfides, or combinations thereof), collectively called “iron negative electrode.” In various embodiments, the positive electrode is comprised of pelletized, briquetted, or pressed manganese-bearing components, including manganese (IV) oxide (MnO2), manganese (III) oxide (Mn2O3), manganese (III) oxyhydroxide (MnOOH), manganese (II) oxide (MnO), manganese (II) hydroxide (Mn(OH)2), or combinations thereof, collectively called “manganese oxide positive electrode.” In various embodiments, electrolyte is comprised of aqueous alkali metal hydroxide including lithium hydroxide (LiOH), sodium hydroxide (NaOH), potassium hydroxide (KOH), cesium hydroxide (CsOH), or combinations thereof.

Abstract: Systems and methods of the various embodiments may provide metal electrodes for electrochemical cells. In various embodiments, the electrodes may comprise iron. Various methods may enable achieving high surface area with low cost for production of metal electrodes, such as iron electrodes.