The present invention relates to an electrode for electrolysis and a method for manufacturing the same, wherein an electrode coating layer for electrolysis is provided in plurality, and the tin content in each coating layer is configured to increase as the distance from a substrate increases, and the titanium content therein is configured to decrease as the distance from the substrate increases, so that excellent performance is maintained, and also delamination and the like does not occur during firing, so that excellent durability may be implemented.

The present invention relates to an electrode for electrolysis and a method for manufacturing the same, wherein an electrode coating layer for electrolysis is provided in plurality, and the tin content in each coating layer is configured to increase as the distance from a substrate increases, and the titanium content therein is configured to decrease as the distance from the substrate increases, so that excellent performance is maintained, and also delamination and the like does not occur during firing, so that excellent durability may be implemented.

A process for the preparation of a catalytic material of an electrode for electrochemical reduction reactions, said material comprising an active phase based on at least one metal from group VIb and an electroconductive support, which process is carried out according to at least the following stages:

a stage of bringing said support into contact with at least one solution containing at least one precursor of at least one metal from group VIb;

a drying stage at a temperature of less than 250° C., without a subsequent calcination stage;

a stage of sulfurization at a temperature of between 100° C. and 600° C.

A process for the preparation of a catalytic material of an electrode for electrochemical reduction reactions, said material comprising an active phase based on at least one metal from group VIb and an electroconductive support, which process is carried out according to at least the following stages:

a stage of bringing said support into contact with at least one solution containing at least one precursor of at least one metal from group VIb;

a drying stage at a temperature of less than 250° C., without a subsequent calcination stage;

a stage of sulfurization at a temperature of between 100° C. and 600° C.

The present invention relates to a photo-electrochemical device for production of a gas, liquid or solid using concentrated electromagnetic irradiation. The device comprises a photovoltaic component configured to generate charge carriers from the concentrated electromagnetic irradiation; and an electrochemical component configured to carry out electrolysis of a reactant. The photovoltaic component contacts the electrochemical component at a solid interface to form an integrated photo-electrochemical device; and further includes at least one reactant channel or a plurality of reactant channels extending between the photovoltaic component and the electrochemical component to transfer heat and the reactant from the photovoltaic component to the electrochemical component. The integrated photo-electrochemical device and auxiliary devices (such as concentrator, flow controllers) build a system which can flexibly react to changes in operating condition and guarantee best performance.

An electrode for gas evolution in electrolytic processes and a method for the production of such an electrode, the electrode having a metal substrate and a coating formed on the substrate, wherein the coating has at least a highly porous catalytic outer layer containing nickel oxide and nickel hydroxide, the porous outer layer having a surface area of at least 40 m.sup.2/g (BET). The catalytic layer is prepared from a Ni oxide/V oxide initial coating with subsequent leaching of V.

The present disclosure provides for and includes electrocatalytic devices and methods for the production of Dry Hydrogen Peroxide (DHP), a non-hydrated, gaseous form of hydrogen peroxide.

A radiation-assisted (typically solar-assisted)electrolyzer cell and panel for high-efficiency hydrogen production comprises a photoelectrode and electrode pair, with said photoelectrode comprising either a photoanode electrically coupled to a cathode shared with an anode, or a photocathode electrically coupled to an anode shared with a cathode; electrolyte; gas separators; all within a container divided into two chambers by said shared cathode or shared anode, and at least a portion of which is transparent to the electromagnetic radiation required by said photoanode (or photocathode) to apply photovoltage to a shared cathode (or anode) that increases the electrolysis current and hydrogen production.

A radiation-assisted (typically solar-assisted)electrolyzer cell and panel for high-efficiency hydrogen production comprises a photoelectrode and electrode pair, with said photoelectrode comprising either a photoanode electrically coupled to a cathode shared with an anode, or a photocathode electrically coupled to an anode shared with a cathode; electrolyte; gas separators; all within a container divided into two chambers by said shared cathode or shared anode, and at least a portion of which is transparent to the electromagnetic radiation required by said photoanode (or photocathode) to apply photovoltage to a shared cathode (or anode) that increases the electrolysis current and hydrogen production.

The invention is directed to a process to convert carbon dioxide to methane by contacting an aqueous solution comprising dissolved carbon dioxide with an electron charged packed bed comprising of a carrier, suitably activated carbon granules, and a biofilm of microorganisms under anaerobic conditions, wherein more than 90 mol % of the dissolved carbon dioxide in the aqueous solution is present as a bicarbonate ion and/or as a carbonate ion.