An electrolytic reactor comprises at least one electrolytic cell with an anode compartment and a cathode compartment separated by a separator, in particular a semipermeable membrane. The anode compartment comprises an inlet and an outlet for anolyte at opposed ends, said inlet and outlet being connected with each other via an anolyte circulation pipe equipped with a storage means for anolyte, an anolyte vessel and at least one adsorption filter for adsorbing molecular impurities. When molecular impurities comes from the cathode compartment through the separator, the electrolytic reactor acts also as a cleaning device for the catholyte.

An electrolytic reactor comprises at least one electrolytic cell with an anode compartment and a cathode compartment separated by a separator, in particular a semipermeable membrane. The anode compartment comprises an inlet and an outlet for anolyte at opposed ends, said inlet and outlet being connected with each other via an anolyte circulation pipe equipped with a storage means for anolyte, an anolyte vessel and at least one adsorption filter for adsorbing molecular impurities. When molecular impurities comes from the cathode compartment through the separator, the electrolytic reactor acts also as a cleaning device for the catholyte.

An assembly includes an SOEC/SOFC-type solid oxide stack, a clamping system for clamping the stack, including at least two clamping rods that can be used to assemble upper and lower clamping plates, and a coupling system for high-temperature fluid-tight coupling of the stack to a heating system for supplying and discharging gas. The coupling system includes a collector with collection ducts for supplying and discharging gas, each provided with a collecting port positioned facing a corresponding communication port of at least one of the upper and lower clamping plates, and seals each placed between a collecting port and a corresponding communication port.

An assembly includes an SOEC/SOFC-type solid oxide stack, a clamping system for clamping the stack, including at least two clamping rods that can be used to assemble upper and lower clamping plates, and a coupling system for high-temperature fluid-tight coupling of the stack to a heating system for supplying and discharging gas. The coupling system includes a collector with collection ducts for supplying and discharging gas, each provided with a collecting port positioned facing a corresponding communication port of at least one of the upper and lower clamping plates, and seals each placed between a collecting port and a corresponding communication port.

An alkaline water electrolysis system includes: a plurality of reaction chambers, each including a main electrode and an auxiliary electrode; a piston provided in each reaction chamber to change a volume of the reaction chamber through reciprocating motion; a drive motor; a connecting rod and a crankshaft installed to change rotational motion of the drive motor into reciprocating linear motion of the piston; a plurality of gas valves installed on an upper side of the reaction chamber to discharge hydrogen and oxygen generated in the reaction chamber through different paths, respectively; a pressure sensor installed in the reaction chamber; a controller configured to open and close the gas valves in response to a signal received from the pressure sensor; and an electrolyte supply apparatus provided to supply an electrolyte to the reaction chambers.

An electrolytic cell, including a plurality of electrodes arranged to define a plurality of channels between adjacent electrodes is disclosed. Each channel is in fluid communication adjacent a first end with a first adjacent channel and is in fluid communication adjacent to a second end with a second adjacent channel. The electrolytic cell may be optimized for high concentration output of hypochlorite. The electrolytic cell may be used in conjunction with a plurality of cells operated collectively to provide operational efficiencies as compared to traditional hypochlorite generators.

An electrolytic cell, including a plurality of electrodes arranged to define a plurality of channels between adjacent electrodes is disclosed. Each channel is in fluid communication adjacent a first end with a first adjacent channel and is in fluid communication adjacent to a second end with a second adjacent channel. The electrolytic cell may be optimized for high concentration output of hypochlorite. The electrolytic cell may be used in conjunction with a plurality of cells operated collectively to provide operational efficiencies as compared to traditional hypochlorite generators.

A system for synthesizing ammonia includes a reactor including an inlet portion, an outlet portion, and an energy source arranged to deliver energy to one or more reactants receivable through the inlet portion of the reactor, and the energy source activatable to reduce nitrogen to ammonia in the presence of hydrogen, at least one hydrogen pump in fluid communication with the outlet portion of the reactor, each hydrogen pump including at least one electrochemical cell, and a recirculation circuit in fluid communication between the at least one hydrogen pump and the inlet portion of the reactor and configured to direct a respective hydrogen stream from each hydrogen pump to the inlet portion of the reactor.

An electrolyzer system comprises one or more electrolyzer cells each comprising a first half cell with a first electrode and a second half cell with a second electrode and a controller to control a current applied through the one or more electrolyzer cells, wherein the controller is configured to dynamically set the current density within a current density range of from about 150 mA/cm.sup.2 to about 3000 mA/cm.sup.2, and wherein the controller is configured to set the current density to a first value when a first condition is met and to a second value when a second condition is met.

This invention is a direct coupling device (31) to generate hydrogen from concentrated sunlight comprised of a solar concentrator (32) and a water electrolyser (33) where the solar concentrator (32) is comprised of an optical concentration element (15), adjacent to a number of photovoltaic cells (14) coupled to a heat exchanger (13) and the water electrolyser (33) comprised of a proton exchange membrane (2) in which the membrane is comprised of a number of individualized anode zones (6) and cathodic zones (12) coated with a catalyst, a number of cathode single-polar plates (3) and a number of anode single-polar plates (5), a number of regeneration electrodes (1), a number of floating flow guide plates (7), a number of elastic compression elements (8) and a casing consisting of an upper (9) and a lower (10) part.