The present invention relates to an electrode material for oxygen evolution reaction. The electrode material comprises crystal structures of AlM.sub.2B.sub.2, and crystal structures of [M2B2] and oxidised M, wherein M is selected from Fe, Mn, and Cr. The present invention further relates to an electrode for oxygen evolution reaction and a system for water electrolysis.

A method of hydrogenating carbon dioxide comprises forming a tunable catalyst comprising at least one metal comprising a size within a range of from a single atom to about 999 nanometers and formulated to produce one or more carbon-containing compound. An electrochemical cell comprising a positive electrode, a negative electrode comprising the tunable catalyst, and an electrolyte between the positive electrode and the negative electrode is formed. Carbon dioxide is introduced to the negative electrode of the electrochemical cell and a potential difference is applied between the positive electrode and the negative electrode to selectively hydrogenate the carbon dioxide. The hydrogen ions are diffused through the electrochemical cell. The carbon dioxide at the negative electrode is hydrogenated to selectively form carbon monoxide, methane, or a desired ratio of carbon monoxide and methane. An electrochemical cell and a carbon dioxide hydrogenation system are also disclosed.

A method of hydrogenating carbon dioxide comprises forming a tunable catalyst comprising at least one metal comprising a size within a range of from a single atom to about 999 nanometers and formulated to produce one or more carbon-containing compound. An electrochemical cell comprising a positive electrode, a negative electrode comprising the tunable catalyst, and an electrolyte between the positive electrode and the negative electrode is formed. Carbon dioxide is introduced to the negative electrode of the electrochemical cell and a potential difference is applied between the positive electrode and the negative electrode to selectively hydrogenate the carbon dioxide. The hydrogen ions are diffused through the electrochemical cell. The carbon dioxide at the negative electrode is hydrogenated to selectively form carbon monoxide, methane, or a desired ratio of carbon monoxide and methane. An electrochemical cell and a carbon dioxide hydrogenation system are also disclosed.

The invention relates to an oxygen-consuming electrode, in particular for use in chloralkali electrolysis, comprising a novel catalyst coating based on carbon nanotubes and a silver-based cocatalyst, and to an electrolysis device. The invention further relates to a method for producing said oxygen-consuming electrode and to the use thereof in chloralkali electrolysis or fuel cell technology.

A syngas generation system that combines a solid oxide electrolysis cell (SOEC) and a carbon gasification unit is described. On the cathode side of the SOEC, CO.sub.2 and H.sub.2O are electrochemically converted to syngas. At the anode side of the system, a second stream of syngas is produced through a carbon gasification process in which solid carbon is reacted with H.sub.2O/CO.sub.2. Oxygen ion transported across the SOEC electrolyte reacts at the anode with a portion of the syngas produced in the gasification process. This reaction product (H.sub.2O/CO.sub.2) can be fed back to the gasification unit.

The invention relates to an oxygen-consuming electrode, in particular for use in chloralkali electrolysis, comprising a catalyst coating based on carbon nanotubes, and to an electrolysis device. The invention further relates to a method for producing said oxygen-consuming electrode and to the use thereof in chloralkali electrolysis or fuel cell technology.

A copper integrated electrode with a convertible oxidation state, a preparation method and an application method are provided. The preparation process is based on an electrochemically induced self-growth method. Copper foam is used as a precursor, soaked in a graphene oxide solution, dried, calcined at high temperature and annealed, and then treated with an alkali solution to obtain the copper integrated electrode with the convertible oxidation state. The working electrode prepared by the nano-catalytic material of the present invention has good denitrification performance in the environmental field, which can achieve nearly 100% nitrate removal rate, nearly 100% nitrogen selectivity and long-term stability. These properties are due to the prepared working electrode having an oxidizable copper (I, II/0, I), oxygen vacancy (O) and a one-dimensional nanowire structure. The structure can regulate the adsorption and reduction of intermediate products, resulting in nearly 100% nitrate removal rate and nearly 100% nitrogen selectivity.

A method and apparatus for carrying out highly efficient switching inductive magnetic Enhanced Exothermic Reactions (EERs) on the surface of electrodes with a conductive electrically heated lithium-polymer electrolyte with switching magnetic fields while under hydrogen loading pressures to produce a second exothermal electrode surface and/or plasma heat reaction to heat a fluid, gas, or heat thermoelectric modules to produce electricity and store energy, while producing a cross-linked carbon graphene by-product at elevated temperatures using an auger to pump and transport the electrolyte fuel in a continuous or intermittent process or a onetime use. The device can self-start from an internal stored charge to electrically start a heated reaction.

A device for hydrogen separation has a tank holding water. A membrane is attached to an open top of the tank. A portion of the membrane is immersed in the water of the tank and outer edges of the membrane are attached to the tank and above the water. A pair of electrodes is coupled to the outer edges of the membrane. A light source is positioned above the water, wherein the light excites the water on top of the membrane causing H.sub.2 to be released.

A device for hydrogen separation has a tank holding water. A membrane is attached to an open top of the tank. A portion of the membrane is immersed in the water of the tank and outer edges of the membrane are attached to the tank and above the water. A pair of electrodes is coupled to the outer edges of the membrane. A light source is positioned above the water, wherein the light excites the water on top of the membrane causing H.sub.2 to be released.