A distributed hydrogen generating fence is formed from a plurality of electrolysis units and fence posts. Each unit includes one or more PV cells, an associated electrolysis system powered by electricity generated by the one or more PV cells, and a feed header for feeding water and an electrolyte to the electrolysis system. The electrolysis system is inside the feed header, and is operable to produce hydrogen and oxygen. The units are located between and are supported by mutually adjacent fence posts. The feed header extends in an inclined manner between the mutually adjacent fence posts. A gas header conducts at least the hydrogen from each of the plurality of units to a first remote facility. The fence includes openings allowing the passage of animals, people or vehicles. The openings can be controlled by a gate, or a grate laid across a hole in the ground spanning the opening.

Described herein are systems and methods for the management and control of electrolyte within confined electrochemical cells or groups (e.g. stacks) of connected electrochemical cells, for example, in an electrolyzer. Various embodiments of systems and methods provide for the elimination of parasitic conductive paths between cells, and/or precise passive control of fluid pressures within cells. In some embodiments, a fixed volume of electrolyte is substantially retained within each cell while efficiently collecting and removing produced gases or other products from the cell.

A process for the separation of electrolyte from the carbon in a solid carbon/electrolyte cathode product formed at the cathode during molten carbonate electrolysis. The processes allows for easy separation of the solid carbon product from the electrolyte without any observed detrimental effect on the structure and/or stability of the resulting solid carbon nanomaterial.

A portable hydrogen-oxygen generator includes a housing having a detachable upper cover and a bottom cover. An electrolytic cell module is arranged in the housing. The electrolytic cell module has a hydrogen generation chamber and an oxygen generation chamber. A cathode electrode plate and an anode electrode plate are respectively arranged in the hydrogen generation chamber and the oxygen generation chamber, and the bottoms of the two generation chambers are communicated for electrolyte circulation. A hydrogen outlet part and an oxygen outlet part detachably arranged on the upper cover and respectively corresponding to the hydrogen generation chamber and the oxygen generation chamber. A filtering film for removing water is arranged between the hydrogen/oxygen outlet part and the electrolytic cell module. A power supply module is arranged on the bottom cover of the housing to supply electric energy to the cathode electrode plate and the anode electrode plate.

Systems and methods for increasing the concentration of a desired CO.sub.x reduction reaction product are described. In some embodiments, the systems and methods include ethylene purification.

A hydrogen production system includes: a hydrogen production device connected to an electric power system or connected to a power generation device using renewable energy and configured to produce hydrogen by electrolyzing pure water; an output control unit capable of controlling an amount of power supplied from the electric power system to the hydrogen production device according to request from the electric power system; a first pure water line for supplying pure water to the hydrogen production device; a first adjustment device capable of adjusting an amount of pure water supplied to the hydrogen production device via the first pure water line; and a first control unit configured to control the first adjustment device, based on a power amount signal indicating information on an amount of power supplied from the electric power system to the hydrogen production device.

An electrochemical reactor suitable for reducing dye to leucodye, comprises at least four electrolytic cells, wherein the electrolytic cells are provided in the form of at least two stacks of at least two electrolytic cells each such that one stack at a time can be separated for cathode or anode regeneration during suspension preparation.

Non-proton cationic impurities are removed from the ionomer in a proton exchange membrane of an electrochemical cell and from the anode side and cathode side catalyst layers. A supply path for an anode feed to the ionomer on the anode side of the proton exchange membrane and a supply path for a cathode feed to the ionomer on the cathode side of the proton exchange membrane are provided. A regenerating fluid with acidic pH is brought into contact with the ionomer on the cathode side of the proton exchange membrane to accomplish an ion exchange of the non-proton cationic impurities with protons and thus remove the non-proton cationic impurities from the ionomer into the regenerating fluid. This removes the non-proton cationic impurities from the ionomer of the electrochemical cell without increasing the risk of corrosion and without interrupting the process of the electrochemical cell.

A method for producing a carbon-monoxide-rich gas product, in which method at least carbon dioxide is subjected to electrolysis, so as to obtain an untreated gas comprising at least carbon monoxide and carbon dioxide, and in which method the untreated gas is subjected to a separation process, which comprises an adsorption and membrane separation, so as to obtain a recycling stream, which comprises the major part of the carbon dioxide contained in the untreated gas, a residual gas, and the carbon-monoxide-rich gas product. A plant for carrying out such a method is also proposed.

An offshore wind turbine system for the large scale production of hydrogen from seawater that includes a floating tower structure, a wind turbine generator, a lift pump, a desalination unit, an electrolysis unit, and an export riser. The floating tower structure may be secured to the sea floor by a suction anchor for deepwater deployment. The lift pump, desalination unit, and electrolysis unit are powered by the wind turbine generator and configured to pump, desalinate, and electrolytically split seawater, respectively. The hydrogen generated by the electrolysis unit is provided to the export riser for delivery to a manifold or pipeline that may be deployed upon the sea floor. Individual units of the system may be combined into a field interconnected to one or more such manifolds to increase the scale of the system.