A device for producing an organic hydride 10 of an aspect of the present invention has an electrochemical cell provided with an anode 12 on a surface of an electrolyte membrane 11 and a cathode including a cathode catalyst layer 13 and a cathode diffusion layer 14 on another surface of the electrolyte membrane 11. A gap is provided between the anode 12 and the electrolyte membrane 11. The anode 12 has a network structure with an aperture ratio of 30 to 70%, and has an electrical supply supporting material formed of an electronic conductor and the electrode catalyst held by the electrical supply supporting material.

A photocatalyst electrode decomposes water with light to generate gas. The photocatalyst electrode has a laminate including a substrate, a conductive layer provided on a surface of the substrate, and a photocatalyst layer provided on a surface of the conductive layer, and a first co-catalyst electrically connected to the photocatalyst layer. The light is incident from the surface side of the photocatalyst layer of the laminate, and in a case where a region where the light is incident on the surface of the photocatalyst layer and above the surface is defined as a first region and the region other than the first region is defined as a second region, the first co-catalyst is provided at least in the second region. The first co-catalyst and the photocatalyst layer are electrically connected to each other by at least one of a transparent conductive layer provided on the surface of the photocatalyst layer or a wiring line.

The present invention provides a liquid electrolytic device and comprises an electrolytic tank, a separator, a cover, and an electrode plate. The electrolytic tank comprises an upper opening, an under opening, and a hollow portion connected there between for containing liquid water. The separator covers the surface of the electrolytic tank corresponding to the upper opening of the electrolytic tank and comprises a first opening while the cover having a fixed portion and a cover hole disposed on the other surface of the separator. An upper portion of the electrode plate is embedded in the fixed portion of the cover while the under portion thereof is disposed in the hollow portion via the first opening and the upper opening. In practice, the electrolytic tank and the electrode plate are separately connected to a power respectively to electrolyze the liquid water in the electrolytic tank for generating a hydrogen-oxygen gas.

An electrolysis device comprising a cell containing a solution, a pair of electrodes installed in the cell, and a voltage application device connected to the pair of electrodes. One electrode of the pair of electrodes is a small electrode, and another electrode of the pair of electroeds is a large electrode. An area of a liquid-contacting portion of the small electrode with the solution is smaller than an area of a liquid-contacting portion of the large electrode with the solution. In a state in which the solution is contained in the cell, only the solution is present between the liquid-contacting portion of the small electrode and a liquid surface of the solution vertically above the liquid-contacting portion of the small electrode.

An electrolysis device including a cell that contains a solution and a pair of electrodes installed in the cell. One electrode of the pair of electrodes is a carbon electrode, and a liquid-contacting portion of the carbon electrode that makes contact with the solution in the cell is configured by only a three-dimensional curved face.

A process is provided for synthesizing synthesis gas from carbon dioxide obtained from atmospheric air or other available carbon dioxide source and water using a sodium-conducting electrochemical cell. Synthesis gas is also produced by the coelectrolysis of carbon dioxide and steam in a solid oxide fuel cell or solid oxide electrolytic cell. The synthesis gas produced may then be further processed and eventually converted into a liquid fuel suitable for transportation or other applications.

An apparatus including at least one electrolytic cell having at least one electrode compartment structured to contain a liquid electrolyte and a plurality of electrically conducting particulates forming a particulate bed, at least one reaction region structured to support electrochemical reactions, at least one collection region structured to facilitate collection of electrically conducting particulates, at least one feeding region structured to facilitate input of electrically conducting particulates, at least one actuation module arranged substantially outside of the at least one reaction region of relevance for the electrochemical modifications.