An electrochemical hydrogen pump includes an electrolyte membrane, an anode catalyst layer, a cathode catalyst layer, an anode gas diffusion layer, a cathode gas diffusion layer, an anode separator, a cathode separator, a first end plate and a second end plate that are disposed on the respective ends of at least one hydrogen pump unit in which the electrolyte membrane, the catalyst layers, the gas diffusion layers, and the separators are stacked on each other, a fastener that fastens the end plates and at least one hydrogen pump unit, and a voltage applier. The electrochemical hydrogen pump transfers hydrogen from the anode catalyst layer to the cathode catalyst layer and pressurizes hydrogen when the voltage applier applies the voltage. The cathode gas diffusion layer includes a water-repellent carbon fiber layer in a main surface thereof that is on a side of the cathode catalyst layer, and is compressed by the fastener.

An environmental control system employs an electrolysis cell utilizing an anion conducting membrane. A power supply is coupled across the anode and cathode of the electrolysis cell to drive reactions to reduce oxygen and/or carbon dioxide in an output gas flow. A cathode enclosure may be coupled with the electrolysis cell and provide an input gas flow and receive the output gas flow. A first electrolysis cell may be utilized to reduce the carbon dioxide concentration in an output flow that is directed to a second electrolysis cell, that reduces the concentration of oxygen. The oxygen and/or carbon dioxide may be vented from the system and used for an auxiliary purpose. An electrolyte solution may be configured in a loop from a reservoir to the anode, to provide a flow of electrolyte solution to the anode. Moisture from the cathode may be collected and provided to the anode.

An electro-catalytic honeycomb for exhaust emissions control and manufacturing method thereof firstly provides a honeycomb structural body comprising a backbone, a solid-oxide layer, a cathode layer and an inner annular layer. The backbone is provided with an anode and gas channels. The anode is provided with an outer surface and an inner surface inside the gas channels. The solid-oxide layer is formed on the inner surface. The cathode layer is formed on the solid-oxide layer. The inner annular layer is allowed for encapsulating an annular end edge of the outer surface. Subsequently, a sealing body is provided over the inner annular layer. Then, the anode is reduced to a reducing environment. Finally, an encapsulation is provided over the honeycomb structural body to seal the outer surface and a sealing membrane of the sealing body is removed for passing a lean-burn exhaust through the gas channels.

The present invention relates to anti-microbial, antiviral, fibers, and fabrics and to devices made from said fabrics. The invention has particular utility in connection with personal protective equipment (PPE’s) such as surgical masks and respirators, and will be described in connection with such utilities, although other utilities are contemplated, including, for example for forming air handling filters for people movers, i.e., automobiles, trucks, buses, trains, ships and planes, as well as for forming filters for air handling equipment for buildings.

In a solid electrolyte integrated device including a substrate with electrically insulated surfaces, a first lower electrode layer and a second upper electrode layer are electrically connected to each other on a first main surface side, and a first upper electrode layer, the first lower electrode layer, the second upper electrode layer, and a second lower electrode layer transmit ions and/or have ion redox ability, contain a metal or a metal oxide or both of a metal and a metal oxide, and have a permeable portion.

A ventilation system includes an electrochemical filter for depleting alkyl phenols, especially 2,6-diisopropyl phenol, in breathing gas. A method uses the filter for removing alkyl phenols, especially 2,6-diisopropyl phenol, from breathing gas.

A method for capturing carbon dioxide comprises introducing a first feed stream comprising carbon dioxide and dioxygen into a first electrochemical cell, reducing the carbon dioxide to carbonate ions at a first cathode of the first electrochemical cell, and reducing the carbonate ions at a first anode to produce a first product stream comprising concentrated carbon dioxide and a second product stream comprising water. A second feed stream comprising water is introduced to a second electrochemical cell coupled to the first electrochemical cell. The water is oxidized at a second anode of the second electrochemical cell to produce hydrogen ions and dioxygen gas, the hydrogen ions are reduced to hydrogen gas at a second cathode, and the hydrogen gas produced by the second cathode is transported to the first anode. The first product stream is removed from the first electrochemical cell. Additional methods and related systems are also disclosed.

An electroactive species includes a quinone core structure and at least one stabilizing group covalently bound thereto. The stabilizing group includes a cationic group, a hydrogen bond donor, or a combination thereof. The electroactive species has an oxidized state and at least one reduced state capable of bonding with a Lewis acid gas to form an anion adduct. Methods for separating a Lewis acid gas from a fluid mixture, electrochemical cells, and gas separation systems are also provided.

An electrochemical hydrogen pump includes: at least one hydrogen pump unit including an electrolyte membrane, an anode, a cathode, an anode separator, and a cathode separator; an anode end plate disposed on the anode separator positioned in a first end in a stacking direction, the first end is one end and the second end is another end; a cathode end plate disposed on the cathode separator positioned in a second end in the stacking direction; a fixing member that prevents at least members from the cathode end plate to the cathode separator positioned in the second end from moving in the stacking direction; a first gas flow channel through which hydrogen generated in the cathode is supplied to a first space disposed between the cathode end plate and the cathode separator positioned in the second end; and a first pressure transmitting member disposed in the first space.

The present application provides systems, apparatuses, and methods for simultaneous processing of tow waster gases, namely H.sub.2S and CO.sub.2. In an exemplary process of this disclosure H.sub.2S is supplied to anode side of an electrochemical cell, while CO.sub.2 is supplied to the cathode side. As a result, valuable commercial products are produced. In particular, SO.sub.2 is harvested from the anode side, while synthesis gas, CO+H.sub.2) is harvested from the cathode side. An electric current is also produced, which can be supplied to a local utility grid.