85results about "Electrogenerative processes" patented technology

The present disclosure relates to circuits for connecting components of a hydrogen plant to a power grid to power the components in an efficient manner. In one implementation, power-side alternate current (AC) to direct current (DC) converters may be connected to a source power grid without the need for an isolation transformer by providing separate buses between the power-side AC-DC converters and load-side DC-DC converters instead of a shared DC bus between the converters. Other implementations for connecting components of a hydrogen plant to a power grid may include an adjustable transformer, such as a tappable transformer or an autotransformer, to connect any number of auxiliary loads of the plant to the power grid. The adjustable transformer may provide for various types of auxiliary load devices to connect to the power provided by the transformer at the same time, including both three-phase devices and one-phase devices.

The invention relates to the technical field of electrochemical catalysis, and particularly discloses a preparation method of a cobalt-based catalyst for synthesizing ammonia through electrocatalysis of nitrate. The method comprises the following steps: placing melamine on the upstream of ZIF-67 powder, carrying out two-step temperature-programmed pyrolysis treatment in a high-purity nitrogen protective atmosphere, and naturally cooling to obtain the cobalt-based catalyst which takes rhombic carbon as a substrate and on which Co-NC nanoparticles are anchored. In the prepared catalyst, nitrogen atoms are doped on the surfaces of cobalt clusters to form Co-NC sites, the local electronic structure of cobalt can be accurately regulated and controlled, and the Faraday efficiency and yield of electrocatalytic nitrate reduction synthesis of ammonia are effectively improved.

Systems and methods for generating hydrogen by electrolysis of water using electricity produced using a vortex generator that results in cavitation and implosion processes in a vortex. The vortex generator can produce conditions within the vortex generator that can allow deuterium molecules naturally occurring in water to acquire sufficient kinetic energy to overcome the Coulomb barrier so that their nuclei can get close enough to each other to undergo various nuclear reactions, discharging a large amount of nuclear energy at the microstate, imparting energy to the water, which can be used to drive a turbine to generate electricity, and the resulting electricity can be used at least in part for the electrolysis of water.

To provide a technology capable of suppressing occurrence of cracking at a peripheral edge of an air electrode.SOLUTION: A solid oxide electrolyzer cell comprises: an air electrode; a fuel electrode; and a solid electrolyte layer disposed between the air electrode and the fuel electrode. A peripheral edge of the air electrode includes, in part or in entirety, an irregular part where projections and recesses are alternately repeated. Where, in the irregular part, a first line is defined as a line passing through a first point, which is the most recessed point, and a second point, which is the second most recessed point, and a second line is defined as a line parallel to the first line and located at a position corresponding to half the distance from a third point, which is the most protruding point, to the first line, in the irregular part, the area of a portion protruding from the second line is larger than the area of a portion recessed from the second line.SELECTED DRAWING: Figure 5

The invention relates to the technical field of new energy, in particular to a metal-water battery system capable of storing energy and asynchronously producing hydrogen and oxygen, the metal-water battery system comprises a bifunctional catalyst, an iron deposition / dissolution electrode and an acidic electrolyte, and the metal-water battery system is prepared by the following specific steps: S1, stainless steel such as 304 or 316 is subjected to molten salt electrolysis modification to prepare the bifunctional catalyst, and the bifunctional catalyst has OER and HER catalytic activity; s2, taking the modified stainless steel catalyst as a first anode, taking inert electrodes such as a copper sheet or a titanium sheet as a first cathode, and forming a first electrolysis system with an acidic ferrous sulfate solution; and S3, electrolysis is conducted through the first electrolysis system, oxygen evolution reaction is conducted on the first anode, and metal iron is deposited on the first cathode. According to the metal-water battery system considering energy storage and asynchronous production of hydrogen and oxygen, time-space separation of deposition / dissolution of iron and hydrogen-oxygen precipitation is regulated and controlled through the bifunctional catalyst, and safe energy storage and step-by-step production of hydrogen energy / oxygen are achieved; the method is suitable for renewable energy storage, hydrogen energy preparation and distributed energy supply scenes.

The invention discloses a system and a method for dehydrogenation of methyl cyclohexane by using a fuel cell. The system comprises an electrochemical dehydrogenation power generation unit which takes a solid oxide fuel cell as a reactor and is used for performing an electrochemical dehydrogenation reaction on methylcyclohexane to generate a dehydrogenation product containing toluene and simultaneously generating electric energy; the electrochemical hydrogenation unit takes a proton exchange membrane electrolytic tank as a reactor and is used for carrying out electrochemical hydrogenation reaction on toluene and hydrogen to generate methylcyclohexane; and in the material circulation loop, toluene generated by the electrochemical dehydrogenation power generation unit is at least partially conveyed to the electrochemical hydrogenation unit to serve as a reactant, and methylcyclohexane generated by the electrochemical hydrogenation unit is at least partially conveyed to the electrochemical dehydrogenation power generation unit to serve as a reactant. The electrochemical reaction path is used for replacing traditional thermocatalysis, the reaction efficiency is improved, the energy consumption is reduced, and the system is a green and efficient energy comprehensive utilization system.

An ethylene production apparatus for producing ethylene from a methane-containing gas includes a ceramic membrane having at least one of oxide ion conductivity and proton conductivity; a first catalyst layer that is disposed on a first face of the ceramic membrane and includes a catalyst for accelerating oxidative-coupling-of-methane reaction; a methane supply unit that supplies the methane-containing gas to a space located on the same side as the first face of the ceramic membrane; and a charge transfer unit that transfers an electron from the first face to a second face of the ceramic membrane or transfers a hole from the second face to the first face. The ethylene production apparatus produces ethylene in the first catalyst layer upon supply of the methane-containing gas from the methane supply unit.

The present invention relates to a device for releasing an insecticide suitable for controlling mosquito larvae. The device comprises a reservoir containing a preparation of at least one insecticide having larvicidal properties, wherein the reservoir comprises an outlet for releasing the preparation of the at least one insecticide. The device further comprises a gas-generating cell configured to build up a pressure by means of gas generation, wherein the device is configured such that pressure built up by the gas-generating cell causes movement of the preparation of the at least one insecticide out of the outlet of the reservoir. The invention also relates to method for controlling mosquito larvae, in particular by releasing a preparation of at least one insecticide having larvicidal properties, using a device according to the present invention.

The invention provides an electrolyser system (10) comprising a heat storage unit (14) and an electrolyser (16). The heat storage unit (14) comprises at least one heat source infeed. The electrolyser (16) comprises at least one electrolyser cell (20), a steam inlet and at least one off-gas outlet. The off-gas outlet is connected to the heat source infeed to heat the heat storage unit (14). The heat storage unit (14) is configured to use its stored heat to produce steam for feeding into the steam inlet and for generating electrical power, either one at a time or both at the same time. The invention also provides a system comprising an intermittent or variable electricity source (12) and an electrolyser system (10) as defined above. The intermittent or variable electricity source (12) can be configured to power the electrolyser (16) and to heat the heat storage unit (14) via a heating element, either both at the same time or individually.

To provide a technology capable of suppressing occurrence of cracking in an air electrode.SOLUTION: An air electrode of a solid oxide electrolyzer cell includes a composite oxide having a perovskite structure as a main component and a chromium-containing substance, in which the area occupancy ratio of the chromium-containing substance to a cross section of the air electrode is 0.8% or more and 9.5% or less.SELECTED DRAWING: Figure 2

A method for manufacturing a semiconductor optical electrode, said method including: a step for forming n-type gallium nitride 12 on a substrate 11; a step for forming indium gallium nitride 13 on the n-type gallium nitride 12; and a step for forming p-type nickel oxide 14 on the indium gallium nitride 13. In the step for forming the p-type nickel oxide, nickel oxide is sputtered in an atmosphere in which oxygen is mixed with a sputtering gas.

A method and an apparatus to generate an electric voltage by contacting the inside of a closed mild carbon steel tube at a temperature between 250°C and 1200°C with di-Hydrogen obtained by electrolysis of pure water, said di-Hydrogen being at a pressure between 0 and 10 Bar gauge.

Disclosed is a method of dehydrogenation of hydrogen-containing compounds in a reactor comprising a catalytic chamber, an electrochemical chamber, and an H-conductive membrane, comprising dehydrogenating the hydrogen-containing compound to produce hydrogen atom equivalents and oxidizing the hydrogen atom equivalents on the anodic H-conductive membrane. The reaction between the protons and a molten electrolyte in the electrochemical chamber generates water, which is decomposed on a counter electrode producing hydrogen. The hydrogen can be used in hydrogenation reactions. Also disclosed is a method of reducing a substrate, for example, a substrate dissolved or dispersed in the molten electrolyte.

A method and apparatus for generating hydrogen gas by reacting a nanogalvanic alloy with water vapor. The apparatus comprises a water vapor source for supplying water vapor to a reaction chamber containing a nanogalvanic alloy. The nanogalvanic alloy reacts with the water vapor to produce hydrogen.

The invention preferably relates to an electrolytic cell for generating hydrogen and oxygen with a layer system comprising at least one pair of catalytically active layers between which a polymer membrane is arranged, wherein the layer system comprises electrically conductive ceramic or metallic nanofibers. In particular, the layer system comprises a pair of catalytically active layers, as well as transport layers close to the anode and / or close to the cathode, wherein the pair of catalytically active layers comprises catalytically active nanoparticles, and wherein, in order to increase in-plane conductivity or connectivity of the catalytically active nanoparticles, an intermediate layer comprising ceramic or metallic nanofibers is present between one of the catalytically active layers and one of the transport layers, or metallic or ceramic nanofibers are present within one of the catalytically active layers in addition to the catalytically active nanoparticles. The nanofibers can themselves be catalytically active or catalytically inactive.

Herein discussed is an electrochemical reactor comprising a first electrode, wherein the first electrode is liquid when the reactor is in operation; a second electrode having a metallic phase and a ceramic phase, wherein the metallic phase is electronically conductive and wherein the ceramic phase is ionically conductive; and a membrane, wherein the membrane is positioned between the first and second electrodes and is in contact with the first and second electrodes, wherein the membrane is mixed conducting. Also discussed herein is a method of producing hydrogen or carbon monoxide comprising: (a) providing an electrochemical reactor having an anode, a cathode, and a membrane between the anode and the cathode, wherein the anode is liquid when the reactor is in operation and wherein the membrane is mixed conducting; (b) introducing a feedstock to the anode; (c) introducing a stream to the cathode, wherein the stream comprises water or carbon dioxide.

To provide a technology capable of suppressing occurrence of cracking in an air electrode.SOLUTION: A solid oxide electrolyzer cell comprises: an air electrode containing a composite oxide, as a main component, having a perovskite structure represented by the general formula A1xA2yBO3-δ (where 0.9≤x+y<1 and δ denotes an oxygen defective amount); a fuel electrode; and a solid electrolyte layer disposed between the air electrode and the fuel electrode. The air electrode includes: a first sulfur-containing substance and a second substance that is different from the composite oxide, the second substance containing at least one of cobalt and iron. The total of area occupancy ratios of the first substance and the second substance in a cross section of the air electrode is greater in a surface region within 10 μm from the surface opposite to the solid electrolyte layer side than in an interface region within 10 μm from the interface on the solid electrolyte layer side.SELECTED DRAWING: Figure 2

The invention discloses a wastewater purification and power generation integrated system and a method thereof.The system comprises a wastewater pool, a first purification pool, an aluminum air fuel cell and a circulating pump, the first purification pool is communicated with the wastewater pool, and a liquid outlet of the first purification pool is communicated with a liquid inlet of the aluminum air fuel cell; a liquid outlet of the aluminum-air fuel cell is communicated with a liquid return port of the first purification tank, the circulating pump enables the first purification tank and the aluminum-air fuel cell to form a circulating loop, and after the circulating pump is started, wastewater dissolved with sodium chloride in the first purification tank enters the aluminum-air fuel cell to participate in electrochemical reaction; after the reaction is completed, liquid carrying reaction products flows back into the first purification tank from the aluminum air fuel cell, the filtered liquid falls into the lower part of the first purification tank and is circulated for multiple times until the liquid in the first purification tank meets the target purification requirement, and a liquid outlet in the first purification tank is used for discharging the liquid meeting the target purification requirement. The integration of wastewater purification and power generation is realized, and water resources are saved.

The invention relates to the technical field of copper plating leveling agents, and particularly discloses an electronic copper plating leveling agent as well as a synthesis method and application thereof, and the electronic copper plating leveling agent is prepared from an amine compound through electrocatalytic oxidation in an electrochemical environment. The method is simple and convenient in process and low in production cost, continuous large-scale production can be achieved, production efficiency and safety are remarkably improved, reaction energy consumption is effectively reduced, and meanwhile spontaneous preparation and external electric energy output of the electronic copper plating leveling agent are achieved; the method provided by the invention can effectively avoid contact with highly toxic substances needed by traditional chemical synthesis, and is beneficial to long-term development and application.

Herein discussed is a method of co-producing carbon monoxide and hydrogen comprising: (a) providing an electrochemical reactor having an anode, a cathode, and a mixed-conducting membrane between the anode and the cathode; (b) introducing a first stream to the anode, wherein the first stream comprises a fuel; (c) introducing a second stream to the cathode, wherein the second stream comprises carbon dioxide and water, wherein carbon monoxide is generated from carbon dioxide electrochemically and hydrogen is generated from water electrochemically. In an embodiment, the anode and the cathode are separated by the membrane and are both exposed to reducing environments during the entire time of operation.

To provide a technology capable of suppressing occurrence of cracking in an air electrode.SOLUTION: An air electrode of a solid oxide electrolyzer cell comprises: a composite oxide, as a main component, having a perovskite structure represented by the general formula A1xA2yBO3-δ (where 0.9≤x+y<1 and δ denotes an oxygen defective amount); a first chromium-containing substance; a second sulfur-containing substance; and a third substance that is different from the composite oxide, the third substance containing at least one of cobalt and iron. The total of area occupancy ratios of the first substance, the second substance and the third substance in a cross section of the air electrode is 0.02% or more and 10.5% or less.SELECTED DRAWING: Figure 2

To provide a technology capable of suppressing occurrence of cracking in an air electrode.SOLUTION: A solid oxide electrolyzer cell comprises: an air electrode containing, as a main component, a composite oxide having a perovskite structure represented by the general formula A1xA2yBO3-δ (where 0.9≤x+y<1 and δ denotes an oxygen defective amount); a fuel electrode; and a solid electrolyte layer disposed between the air electrode and the fuel electrode. The air electrode contains a sulfur-containing substance, and an area occupancy ratio of the sulfur-containing substance in a cross section of the air electrode is greater in a surface region within 10 μm from a surface opposite to the solid electrolyte layer side than in an interface region within 10 μm from the interface on the solid electrolyte layer side.SELECTED DRAWING: Figure 2

The invention relates to the technical field of water pollution control and resource utilization, in particular to a microbial fuel cell and a method for removing nitrogen and phosphorus by using a cell anode chamber. According to the microbial fuel cell, an anode of the microbial fuel cell is a carbon felt with an iron wire as a support, a cathode of the microbial fuel cell is a carbon brush, and anaerobic sludge is inoculated in an anode chamber. The invention provides a system for synchronously recovering nitrogen and phosphorus in urine based on a microbial fuel cell and a biochemical reaction, so as to realize efficient nitrogen removal and phosphorus recovery. According to the invention, triple functions of power generation, denitrification and phosphorus recovery of the microbial fuel cell are integrated, an innovative technical path of pollution control, energy regeneration and resource high value is formed, and a solution is provided for phosphorus recovery and wastewater treatment.

The present invention relates to a system and a process for producing synthetic fuels that are characterized in that they allow a load-flexible mode of operation when using fluctuating energy sources.

The present application relates to an electrochemical system and method for capturing carbon dioxide, regenerating pure carbon dioxide, and / or converting captured carbon dioxide to biomethane, syngas, formic acid, and combinations thereof. More specifically, the present application relates to an electrochemical cell having an air cathode-proton or cation exchange membrane and a non-biological or biological anode in which captured carbon dioxide is reduced to carbonate, which is then regenerated to pure carbon dioxide or transferred to another chemical production module. The regenerated carbon dioxide may be purified, compressed, or stored for later use. The present application includes volatile fatty acids derived from carbohydrate-rich waste. The present application also includes the ability to regenerate caustic absorbers used in initial carbon dioxide capture.

The present disclosure relates to an electrolysis system for generating hydrogen, the system comprising an electrolyzer comprising an electrolyte water inlet, a first gas outlet and a second gas outlet, an electrical generator configured to generate electricity, preferably for the electrolyzer, said electrical generator being connected to the first and / or second gas outlet of the electrolyzer and configured to be powered, at least in part, by gas flow provided via the first and / or second gas outlet, the system further comprising an electrolyte pump for supplying the electrolyzer with electrolyte water, wherein the electrical generator is a motor-generator comprising a first mode for generating electricity and a second mode for using electricity to drive the electrolyte pump.

This invention was developed for the technical field of energy production, in which electricity and hydrogen are of great and growing importance. The only input used to produce electricity and hydrogen is water, and the production process is electrochemical, which occurs in a device that is electrified by the water itself. The process is based on the reaction of hydrogen abstraction from water, accompanied by the formation of hydrogen peroxide or oxygen, which occurs in a humid / aqueous environment that contains two electrical conductors separated, but electrically connected to an electrical circuit, with one conductor having a surface with an acidic nature (CA) and the other conductor with a basic nature (CB) of the substances present on the surfaces of the two electrical conductors.

The invention belongs to the technical field of nitrogen oxide capture, and particularly relates to a device for direct capture-conversion power generation of ppm-concentration nitrogen oxides and application of the device. The device comprises a zinc sheet electrode, an electrolyte and a gas diffusion electrode; the gas diffusion electrode is obtained by coating hydrophobic carbon cloth with electrode slurry; the electrode slurry is formed by mixing an electrode material, conductive carbon and polyvinylidene fluoride in an organic solvent; the electrode material has a structure as shown in a formula (I), in the formula, the value of n is 20 to 100. Compared with the prior art, the problem that a noble metal catalyst adopted by a nitrogen oxide electrochemical reduction technology in the prior art is limited in treatment capacity on low-concentration nitrogen oxide is solved. According to the scheme, a nitrogen oxide direct capture-conversion power generation device is constructed, and effective capture and conversion of NO2 with different concentrations and even ppm-level concentrations can be achieved.

A light-driven fuel cell includes a cathode, an anode, and a proton-permeable membrane between the anode and the cathode. The anode includes a photocatalyst for anaerobic methane oxidation reaction, and when the anode is supplied with methane and water and is irradiated with light, methanol, protons and electrons are generated by anaerobic methane oxidation reaction from the methane and the water supplied to the anode; the protons pass through the proton-permeable membrane and move to the cathode; and the electrons move to the cathode via an external circuit. The cathode includes a photocatalyst for aerobic methane oxidation reaction, and when the cathode is supplied with methane and oxygen and is irradiated with light, methanol and water are generated by aerobic methane oxidation reaction from the methane and the oxygen supplied to the cathode and the protons and the electrons moved from the anode.