Synthetic materials that are useful as heterogeneous catalysts or electrocatalysts. The materials can be used to catalyze oxidation and/or reduction reactions and/or oxygen/hydrogen evolution/oxydation reactions.

A hydrogen station includes a water electrolysis device that produces hydrogen gas by an electrolytic reaction consuming power supplied from a commercial power network, a compressor that compresses the hydrogen gas produced by the water electrolysis device, an accumulator that accumulates the hydrogen gas compressed by the compressor, a dispenser that fills a fuel cell vehicle with the hydrogen gas accumulated in the accumulator, and a control device that controls a power consumption amount of the water electrolysis device on the basis of a command for adjusting supply and demand of power of the commercial power network.

A hydrogen station includes a water electrolysis device that produces hydrogen gas by an electrolytic reaction consuming power supplied from a commercial power network, a compressor that compresses the hydrogen gas produced by the water electrolysis device, an accumulator that accumulates the hydrogen gas compressed by the compressor, a dispenser that fills a fuel cell vehicle with the hydrogen gas accumulated in the accumulator, and a control device that controls a power consumption amount of the water electrolysis device on the basis of a command for adjusting supply and demand of power of the commercial power network.

The embodiments provide an electrode catalyst layer for reduction of carbon dioxide, a carbon dioxide reduction electrode, and a carbon dioxide electrolysis apparatus. The catalyst layer is made to exhibit high partial current density and to endure a long-term operation by controlling the wettability. The catalyst layer comprises a metallic catalyst supported on carbon material, an ion-conductive material, and a hydrophilic polymer; and is characterized in that a BET specific surface area (A.sub.N2) of said catalyst layer determined by nitrogen gas-adsorption and a BET specific surface area (A.sub.H2O) of said catalyst layer determined by water vapor-adsorption are in a ratio (A.sub.H2O/A.sub.N2) of 0.08 or less.

The invention relates to an electrocatalyst for reduction of CO.sub.2 to produce multi-carbon compounds, comprising a multi-metal material comprising a primary metal being copper and at least one enhancer metal selected from germanium, gallium, tin, silicon, silver, gold, zinc and aluminium The invention also relates to a process for electrochemical production of a multi-carbon compound from CO.sub.2 using such an electrocatalyst.

The invention relates to an electrocatalyst for reduction of CO.sub.2 to produce multi-carbon compounds, comprising a multi-metal material comprising a primary metal being copper and at least one enhancer metal selected from germanium, gallium, tin, silicon, silver, gold, zinc and aluminium The invention also relates to a process for electrochemical production of a multi-carbon compound from CO.sub.2 using such an electrocatalyst.

The invention relates to a method and an electrolysis device for the production of chlorine, carbon monoxide and optionally hydrogen via the electrochemical conversion of carbon dioxide and alkali chloride solution, wherein the carbon dioxide from a carbon dioxide gas source (55) is electrochemically reduced at a gas diffusion electrode, designed as a cathode (11), in an aqueous alkali-chloride-containing solution as the catholyte (17), and chlorine is simultaneously anodically generated from an aqueous alkali-chloride-containing solution as the anolyte (15a).

The present disclosure provides systems and methods for producing carbon products via electrochemical reduction from fluid streams containing a carbon-containing material, such as, for example, carbon dioxide. Electrochemical reduction systems and methods of the present disclosure may comprise micro- or nanostructured membranes for separation and catalytic processes. The electrochemical reduction systems and methods may utilize renewable energy sources to generate a carbon product comprising one or more carbon atoms (C1+ product), such as, for example, fuel. This may be performed at substantially low (or nearly zero) net or negative carbon emissions.

A device is provided for electrochemically synthesizing a plurality of molecules. The device includes: (i) one or more electrodes configured to generate reaction conditions to mediate the synthesis of the molecules, and (ii) a structure having a surface configured to attach thereon precursors of the molecules and having a footprint. The surface has an area that is at least 5 times larger than the footprint, for example at least 20 times greater, or at least 50 times or, or at least 100 times greater, or at least 200 time

A device is provided for electrochemically synthesizing a plurality of molecules. The device includes: (i) one or more electrodes configured to generate reaction conditions to mediate the synthesis of the molecules, and (ii) a structure having a surface configured to attach thereon precursors of the molecules and having a footprint. The surface has an area that is at least 5 times larger than the footprint, for example at least 20 times greater, or at least 50 times or, or at least 100 times greater, or at least 200 time