The present application relates to water electrolyzers, including water electrolyzers incorporating anion exchange membranes. The present applications also relates to materials incorporated into water electrolyzers and approaches for manufacturing water electrolyzers, as well as methods of using water electrolyzers.

Described herein is a brine electrolyzer including a pyrochlore electrocatalyst. The brine may include natural or added perchlorate salts. Also described herein are methods of using the brine electrolyzer. Advantages of this brine electrolyzer include device operation at near-neutral pH, device operation without the need for a deionized water feed, and the use of selective catalysts at the anode that favor oxygen evolution and mitigate the occurrence of unwanted side reactions.

The present disclosure relates to a carbon dioxide capture device comprising a first reactor and a second reactor both of which show a (photo)anode containing or connected to oxygen evolution and/or carbon dioxide evolution catalyst(s) and a (photo)cathode containing or connected to an oxygen reduction catalyst, wherein the first reactor comprises an anion exchange membrane placed between the porous (photo)anode and porous (photo)cathode, and the second reactor comprises a proton exchange membrane placed between the porous (photo)anode and porous (photo)cathode. On the porous (photo)cathode side of the first reactor there is a fluid inlet able to carry carbon dioxide, air and water, and on the side of the porous (photo)cathode of the second reactor there is a fluid outlet able to carry carbon dioxide and water.

An electrochemical cell includes: a cathode having a first catalyst that reduces carbon dioxide to carbon monoxide; an anode; an electrolyte solution containing a reactant and an electrolyte; and a second catalyst that synthesizes a carbonyl compound from the carbon monoxide and the reactant.

An electrochemical cell includes: a cathode having a first catalyst that reduces carbon dioxide to carbon monoxide; an anode; an electrolyte solution containing a reactant and an electrolyte; and a second catalyst that synthesizes a carbonyl compound from the carbon monoxide and the reactant.

Disclosed are an electrolysis cell system and a method for preparing hydrogen and oxygen. The electrolysis cell system includes: an anode chamber with an inlet and an outlet; a cathode chamber with an inlet and an outlet; a composite membrane electrode set between the anode chamber and the cathode chamber, which includes a cation exchange membrane in alkali-ion form with an anode catalyst coated on one side thereof and a cathode catalyst coated on the other side thereof; a continuous or intermittent flow of an aqueous alkaline electrolyte through the anode chamber and the cathode chamber. The electrolysis cell system of the present disclosure features low material cost, long membrane service life, high operating temperature, low operating requirements and high safety; when it is used to prepare hydrogen and oxygen, gas with relatively high purity can be obtained.

Disclosed are an electrolysis cell system and a method for preparing hydrogen and oxygen. The electrolysis cell system includes: an anode chamber with an inlet and an outlet; a cathode chamber with an inlet and an outlet; a composite membrane electrode set between the anode chamber and the cathode chamber, which includes a cation exchange membrane in alkali-ion form with an anode catalyst coated on one side thereof and a cathode catalyst coated on the other side thereof; a continuous or intermittent flow of an aqueous alkaline electrolyte through the anode chamber and the cathode chamber. The electrolysis cell system of the present disclosure features low material cost, long membrane service life, high operating temperature, low operating requirements and high safety; when it is used to prepare hydrogen and oxygen, gas with relatively high purity can be obtained.

The invention relates to a process and system for electrolytic production ammonia. The process comprises feeding nitrogen to an electrolytic cell, where it comes in contact with a cathode electrode surface, wherein said surface has a catalyst surface comprising at least one transition metal oxide, the electrolytic cell further comprising a proton donor, and running a current through said electrolytic cell, whereby nitrogen reacts with protons to form ammonia. The process and system of the invention uses an electrochemical cell with a cathode surface having a catalytic surface that is preferably charged with one or more of Rhenium oxide, Tantalum oxide and Niobium oxide.

The invention relates to a process and system for electrolytic production ammonia. The process comprises feeding nitrogen to an electrolytic cell, where it comes in contact with a cathode electrode surface, wherein said surface has a catalyst surface comprising at least one transition metal oxide, the electrolytic cell further comprising a proton donor, and running a current through said electrolytic cell, whereby nitrogen reacts with protons to form ammonia. The process and system of the invention uses an electrochemical cell with a cathode surface having a catalytic surface that is preferably charged with one or more of Rhenium oxide, Tantalum oxide and Niobium oxide.

Provided is a silver nanocluster doped with a metal hydride, a manufacturing method thereof, and an electrochemical catalyst for hydrogen gas generation. The silver nanocluster doped with the metal hydride has utility as an electrochemical catalyst, has a very low production cost compared to a conventional platinum (Pt) catalyst, and exhibits an equivalent or higher hydrogen gas generation effect.