Abstract: An electrolytic unit includes at least a plurality of electrolytic cells for electrolyzing water. Each of the electrolytic cells includes a case for defining an electrolytic chamber therein and a diaphragm for dividing the electrolytic chamber into an anode chamber on an anode side and a cathode chamber on a cathode side. The plurality of the electrolytic cells forms a stack in which the electrolytic cells are stacked in a normal direction of the diaphragms with the orientations of the diaphragms aligned with each other.

Abstract: An environment control system utilizes oxygen and humidity control devices that are coupled with an enclosure to independently control the oxygen concentration and the humidity level within the enclosure. An oxygen depletion device may be an oxygen depletion electrolyzer cell that reacts with oxygen within the cell and produces water through electrochemical reactions. A desiccating device may be g, a dehumidification electrolyzer cell, a desiccator, a membrane desiccator or a condenser. A controller may control the amount of voltage and/or current provided to the oxygen depletion electrolyzer cell and therefore the rate of oxygen reduction and may control the amount of voltage and/or current provided to the dehumidification electrolyzer cell and therefore the rate of humidity reduction. The oxygen level may be determined by the measurement of voltage and a limiting current of the oxygen depletion electrolyzer cell. The enclosure may be a food or artifact enclosure.

Abstract: An electrochemical cell configured for reducing carbon dioxide; it has an anode electrode; a cathode electrode comprising a porous support including metal acting as a catalyst; an anion exchange membrane, wherein the anion exchange membrane separates an anodic compartment from a cathodic compartment; the anolyte and the catholyte are composed of a liquid electrolyte solution with a concentration between 0.1M-10M, wherein anions of the electrolyte solution is adapted to diffuse from the cathodic compartment to the anodic compartment through the anion exchange membrane, wherein the carbon dioxide contacts the cathode electrode and the catalyst converts electrochemically the carbon dioxide into C1-C2 liquid organic biproducts and anions as at the catholyte; wherein the cathode electrode and the anode electrode are electrically connected through one of current collector plates; and a wired connection.

Abstract: A system and method for feeding carbon dioxide to a first cathode cavity of a first electrochemical cell, electrochemically reducing the carbon dioxide at a first cathode in the first electrochemical cell to carbon monoxide (CO), flowing the CO from the first cathode cavity to a second cathode cavity of a second electrochemical cell, and forming at least one of ethanol or ethylene from the CO at a second cathode in the second electrochemical cell. The forming of the at least one of ethanol or ethylene from the CO may involve dimerization of the CO at the second cathode to form CO dimer.

Abstract: To provide a cationic electrodeposition coating composition manifesting excellent anticorrosive property at edges and in flat areas, along with finish quality, even in a state of thin film, as well as a coated article demonstrating these excellent coating film performances, the cationic electrodeposition coating composition includes an amino group-containing epoxy resin (A), a blocked polyisocyanate compound (B), and crosslinked epoxy resin particles (C), wherein the crosslinked epoxy resin particles (C) are contained by 0.1 to 40 parts by mass relative to the total mass in solids content of the amino group-containing epoxy resin (A) and blocked polyisocyanate compound (B); the number-average molecular weight of the crosslinked epoxy resin particles (C) is under 100,000; and/or the volume-average particle size of the crosslinked epoxy resin particles (C) is 30 to 1,000 nm.

Abstract: Various embodiments relate to an electrochemical cell for removal of materials from water and methods of using the same. A method of removing phosphorus from water includes immersing an electrochemical cell in water including phosphorus to form treated water including a salt that includes the phosphorus. The electrochemical cell includes an anode including Mg, Al, Fe, Zn, or a combination thereof, a cathode including Cu, Ni, Fe, or a combination thereof. The method includes separating the salt including the phosphorus from the treated water, to form separated water having a lower phosphorus concentration than the water including phosphorus.

Abstract: An electrochemical cell includes: a cathode having a first catalyst that reduces carbon dioxide to carbon monoxide; an anode; an electrolyte solution containing a reactant and an electrolyte; and a second catalyst that synthesizes a carbonyl compound from the carbon monoxide and the reactant.

Abstract: A method and apparatus for producing chlorine gas whereby a nanobubble generator introduces nanobubbles at a concentration of at least 106 nanobubbles per cm3 into an electrolytic cell comprising a pair of electrodes and a chlorine-containing, electrolyzable liquid, and the electrolytic cell is operated to produce chlorine gas.

Abstract: An electrolyzer system includes a steam generator configured to generate steam, a stack of solid oxide electrolyzer cells configured to generate a hydrogen stream using the steam received from the steam generator, and a water preheater configured to preheat water provided to the steam generator using heat extracted from oxygen exhaust output from the stack.

Abstract: A platform technology that uses a novel membrane electrode assembly, including a cathode layer, an anode layer, a membrane layer arranged between the cathode layer and the anode layer, the membrane conductively connecting the cathode layer and the anode layer, in a COx reduction reactor has been developed. The reactor can be used to synthesize a broad range of carbon-based compounds from carbon dioxide and other gases containing carbon.

Abstract: An electrolyzed water generator includes an anode, a cathode, a cation exchange membrane, a housing having a first through-hole and a second through-hole, a first feeder shaft, and a second feeder shaft. Each of the first feeder shaft and the second feeder shaft has an engaging portion. Each of the first through-hole and the second through-hole has an engaged portion. The engaging portion and the engaged portion are engaged with each other to inhibit a positional shift of the first feeder shaft against the first through-hole in the given direction and to inhibit a positional shift of the second feeder shaft against the second through-hole in the given direction.

Abstract: A separating membrane-gasket-protecting member assembly including: an ion-permeable separating membrane; a gasket holding a periphery of the membrane; and a frame-shaped protecting member holding the gasket; the protecting member including: a frame-shaped base body; and a frame-shaped lid member; the base body including: a receiving part being arranged in an inner periphery of the base body and receiving the gasket and the lid member; and a supporting part extending toward an inner periphery side of the base body and supporting the gasket received in the receiving part in a direction crossing a main face of the membrane; and the lid member having dimensions such that the lid member can be received in the receiving part, wherein the gasket and the lid member are received in the receiving part such that the gasket is sandwiched between the supporting part and the lid member.

Abstract: Electron exchangers are placed vertically or horizontally in a conversion cell and divide it into cathode gas chamber, liquid chamber, and anode gas chamber. One side of the electron exchangers is conductive, and the other side is nonconductive. Voltage is applied to the electron exchangers to convert the liquid conversion solution to gases at the side of the electron exchangers facing the gas chambers, and gases are released directly to the gas chambers. The electron exchangers have many puncture channels on the surfaces, and they are designed by critical surface calculations. The puncture channels have special designed patterns and are manufactured with a precision technology. In producing the same amount of final gases, our method is energy efficient.

Abstract: An electrochemical apparatus includes a separator having a first reaction region and a second reaction region; a first reaction layer disposed to correspond to the first reaction region; a second reaction layer disposed to correspond to the second reaction region; a first partition wall portion protruding from one surface of the separator, disposed along a boundary between the first reaction layer and the second reaction layer, and including a first connecting flow path configured to connect the first reaction region and the second reaction region so that the first reaction region and the second reaction region fluidically communicate with each other through the first connecting flow path; and a first sealing member disposed at an end portion of the first partition wall portion and configured to seal a portion between the first reaction layer and the second reaction layer, enlarging a reaction region without increasing a size of a reaction layer.

Abstract: An apparatus and method are provided for the electrochemical production of hydrogen, oxygen and metal hydroxide wherein the metal is derived from a metal silicate. The process involves the electrolysis of a metal salt solution where hydrogen and a metal hydroxide are produced at the cathode, and oxygen, or chlorine, and an acid are produced at the anode. The acid is reacted with a metal silicate producing a soluble metal salt and water that is used in turn to make solid or dissolved metal hydroxide. The net CO2 and acid gas emissions of the invention and its products may therefore be significantly reduced or turned negative.

Abstract: A method for pre-lithiation of an electrode, including a first step of providing a pre-lithiation reaction system which includes a first reaction system including lithium metal, a separator, an electrolyte for pre-lithiation and carbon felt, and a second reaction system including the electrolyte for pre-lithiation and an electrode to be pre-lithiated, wherein the lithium metal and the electrode to be pre-lithiated are not in direct contact with each other. The first reaction system and the second reaction system communicate with each other. The first step is followed by a second step of preparing an electrode including an electrode current collector, and an electrode active material layer formed on at least one surface of the electrode current collector; and a third step of allowing the electrode to pass through the second reaction system by a conveying roll to carry out pre-lithiation of the electrode.

Abstract: A metal sulfate manufacturing system comprising an electrochemical dissolution system having, an anode electrode that holds metal raw material, a cathode electrode, an electrolyte bath having an inlet to receive an initial acid or metal-acid complex solution and an outlet to discharge the treated metal sulfate solution, stirring equipment that mixes the electrolyte bath, a temperature control system, and a rectifier that supplies current at constant voltage between the anode and cathode electrode.

Abstract: An electrolyzer or unitized regenerative fuel cell has a flow field with at least one channel, wherein the cross-sectional area of the channel varies along at least a portion of the channel length. In some embodiments the channel width decreases along at least a portion of the length of the channel according to a natural exponential function. The use of this type of improved flow field channel can improve performance and efficiency of operation of the electrolyzer device.

Abstract: Disclosed is a purification method of electrolytic gas generated from an electrolysis cell having a cathode and an anode. In a step of performing electrolysis of an electrolyte solution supplied into the electrolysis cell and repeating the electrolysis while circulating the electrolyzed electrolyte solution via an circulation tank disposed outside the electrolysis cell, a bag-shaped membrane pack, which is made from a specific porous membrane material, is of a shape having an opening at a top end thereof and closed at an entire side wall and entire bottom wall thereof and has a large permeation area at the entire side wall and entire bottom wall, is disposed in an interior of the circulation tank, thereby enabling to perform the electrolysis while purifying the electrolyte solution in which a portion of the electrolytic gas generated by the electrolysis is dissolved and bubbles of another portion of the electrolytic gas coexist.

Abstract: An electrochemical hydrogen pump includes at least one hydrogen pump unit including an electrolyte membrane, an anode on one main surface of the electrolyte membrane, a cathode on the other main surface of the electrolyte membrane, an anode separator on the anode, and a cathode separator on the cathode, the at least one hydrogen pump unit transferring, to the cathode, hydrogen supplied to the anode and pressurizing the hydrogen, a first fixing member for preventing movement of the cathode separator in a direction in which the cathode separator is stacked, a first end plate on the anode separator at one end in the stacking direction, a second end plate on the cathode separator at the other end in the stacking direction, and a first gas flow channel through which hydrogen in the cathode is supplied to a first space between the second end plate and the cathode separator.