Abstract: A Water Activated Battery characterized by a) At least one anode selected from the group consisting of magnesium, aluminum, zinc and alloys thereof; b) A cathode comprising at least one basic copper salt comprising Cu(OH)2 combined with a copper salt CuX (with n?1 the molar ratio between the CuX and the Cu(OH)2 in the basic copper salt), such that a discharge reaction in saline versus a Mg anode could be written nMg+Cu(OH)2.

Abstract: A Water Activated Battery characterized by a) At least one anode selected from the group consisting of magnesium, aluminum, zinc and alloys thereof; b) A cathode comprising at least one basic copper salt comprising Cu(OH)2combined with a copper salt CuX (with (n?1) the molar ratio between the CuX and the Cu(OH)2in the basic copper salt), such that a discharge reaction in saline versus a Mg anode could be written nMg+Cu(OH)2.(n?1)CuX=Mg(OH)2+(n?1)MgX+nCu) on a skeletal frame, the cathode further comprising a non-hygroscopic soluble, ionically conductive material; c) at least one cavity separating said cathode and said at least one anode; and d) at least one aperture leading to said at least one cavity for the ingress of an electrolyte-forming, aqueous liquid.

Abstract: A Water Activated Battery characterized by a) At least one anode selected from the group consisting of magnesium, aluminum, zinc and alloys thereof; b) A cathode comprising at least one basic copper salt comprising Cu(OH)2 combined with a copper salt CuX (with n?1 the molar ratio between the CuX and the Cu(OH)2 in the basic copper salt), such that a discharge reaction in saline versus a Mg anode could be written nMg+Cu(OH)2.

Abstract: A Water Activated Battery characterized by a) At least one anode selected from the group consisting of magnesium, aluminum, zinc and alloys thereof; b) A cathode comprising at least one basic copper salt comprising Cu(OH)2 combined with a copper salt CuX (with (n?1) the molar ratio between the CuX and the Cu(OH)2 in the basic copper salt), such that a discharge reaction in saline versus a Mg anode could be written nMg+Cu(OH)2.(n?1)CuX=Mg(OH)2+(n?1)MgX+nCu) on a skeletal frame, the cathode further comprising a non-hygroscopic soluble, ionically conductive material; c) at least one cavity separating said cathode and said at least one anode; and d) at least one aperture leading to said at least one cavity for the ingress of an electrolyte-forming, aqueous liquid.

Abstract: An air electrode for electrochemical cells provides high current capability over prior air cathodes. The electrode has an active layer of a carbon matrix with an oxygen reduction catalyst and a fluoropolymer binder. An embedded current collector is coated with a stable conductive material such as a conductive carbon-based paint or gold, silver, palladium, platinum, chromium, titanium, or electroless nickel. The active layer uses activated carbon made from peat which has a high BET surface area and low hardness.

Abstract: A mechanically rechargeable, electrochemical metal-air battery of the type having a plurality of metal-air cells, each of said cells comprising (a) a housing having a base, two major surfaces and two minor surfaces, defining an interior space for containing therein a replaceable metal electrode having an electrically conductive skeletal member encompassed by an active metal component, the interior space communicating with an opening opposite the base through which the replaceable metal electrode is selectively removed to enable the mechanical replacement thereof with a freshly charged metal electrode; (b) at least one generally planar, air permeable but liquid impermeable, air electrode, each of the electrodes being installed in a window-like opening provided in at least one of the major surfaces; and (c) an electrolyte in contact with the metal and air electrodes; the improvement comprising a first woven mesh separator attached to an inner, electrolyte-facing surface of each of the air electrodes and a secon

Abstract: The invention provides a single pass wet fabrication process for preparing a gas diffusion electrode for metal-air batteries and fuel cells comprising:a) preparing an active-layer forming dispersion containing catalyzed carbon black, hydrophilic fluorinated polymer and particulate hydrophobic fluorinated polymer in a liquid medium;b) preparing a blocking-layer forming dispersion containing carbon black and particulate hydrophobic polymeric binders in a liquid medium;c) filtering a first of the layer forming dispersions though filtering means to deposit a first layer of damp solids mass;d) filtering a second of the layer forming dispersions through the first deposited damp solids mass before the drying or sintering of the first deposited damp solids mass in order to deposit a second layer of damp solids mass thereon in such a manner that lower components of the second layer of damp solids mass are intermixed with upper components of the first layer of deposited damp solids mass;e) drying and compressing the co

Abstract: The invention provides a gas diffusion electrode containing a fiber reinforced composite structure in a layer thereof, the structure comprising structurally intact fibers precoated with sinterable polymeric material, which material is heat sintered, whereby the fibers are bonded to each other and to other components of the structure by the sintered polymeric material, while maintaining their individual fibrous structure and strength.