77 results about "High-temperature electrolysis" patented technology

The invention relates to the technical field of aluminum electrolytic capacitor processing, and discloses a branched-chain carboxylate composite high-temperature-resistant aluminum electrolytic capacitor electrolyte and a preparation method thereof. Branched-chain carboxylate ammonium salt with a specific steric hindrance structure is used as a composite main solute; the steric hindrance effect brought by the branched chain structure greatly enhances the thermal stability of carboxylate anions and ammonium ions at a high temperature, the upper limit of the working temperature of the aluminum electrolytic capacitor can be stably increased to 135 DEG C or above, and the branched chain carboxylate can still keep high dissociation degree and ion mobility at a high temperature. The high-temperature ESR of the capacitor can be remarkably reduced by combining the optimally selected high-boiling-point and medium-viscosity solvent combination, the dynamic repair of the aluminum oxide dielectric layer on the surface of the anode foil can be promoted by adding the efficient film forming accelerant, the leakage current of the capacitor at the high temperature is greatly reduced, all the additives play a complementary role around the main solute, and the service life of the capacitor is prolonged. And an efficient and stable high-temperature-resistant electrolyte system is jointly constructed.

A continuous method includes passing a first steam feed stream and one or more of a recycled tail gas stream and a methane-rich feed stream to a cathode of a first electrolyzer containing the cathode, an anode and an electrolyte inserted between the cathode and the anode, thereby producing a cathode effluent including syngas, and passing the cathode effluent including syngas to a reactor unit, thereby producing a chemical product or a fuel-based product.

The invention discloses a green ammonia synthesis system based on calcium-based thermochemical energy storage and high-temperature electrolysis coupling. Comprising a renewable energy power generation system, a heat exchange working medium pump, a thermochemical energy storage unit, an air separator, a high-temperature electrolytic hydrogen production unit, a nitrogen storage tank, a hydrogen storage tank, a first steam storage tank, a third steam storage tank, an ammonia synthesis unit, a second heat exchanger, a second steam storage tank, a first heat exchanger and a water feeding pump, the system can effectively solve the problem of intermittency of renewable energy sources, and is low in cost and high in flexibility.

The invention relates to the preheating of a supply fluid for a high-temperature electrolyzer (6) using a system (1) comprising an absorption heat transformer (12).

The application discloses a flow field structure design method for a solid oxide electrolytic cell, and belongs to the technical field of solid oxide electrolytic cells; the method is based on the establishment of an electrolytic cell flow field topology domain, fluid flow, heat transfer and mass transfer processes are coupled modeling, the flow field structure is optimized and designed through the construction of multi-physical field constraint conditions, so that the flow field structure suitable for high-temperature electrolysis working conditions is obtained; the method takes improving the concentration of reaction gas and improving the temperature distribution as the design target, and the volume fraction of the flow channel and the pressure drop of the inlet and outlet are constrained, so that the obtained flow field structure can consider the mass transfer performance, the heat management performance and the operation stability; the flow field structure obtained by the method can effectively reduce the internal temperature gradient of the electrolytic cell, improve the gas distribution uniformity of the reaction area, and thus improve the current density and the operation stability of the electrolytic cell.

The invention discloses a Mars surface nuclear energy utilization system for comprehensive thermoelectric hydrogen storage and production, and relates to a Mars surface nuclear energy utilization system. The invention aims to solve the problem that the Mars base needs an efficient and reliable energy system. The system comprises a Brayton thermoelectric conversion device, one side of the Brayton thermoelectric conversion device is connected with a high-temperature electrolytic hydrogen production device, the other side of the Brayton thermoelectric conversion device is connected with a laser wireless energy transmission device, and the Brayton thermoelectric conversion device is further connected with a heat supply device and a Carnot battery energy storage device; the heat supply device provides heat for the Mars base, and the Brayton thermoelectric conversion device provides power for power utilization facilities, the high-temperature electrolytic hydrogen production device and the laser wireless capacity transmission device of the Mars base. The invention belongs to the technical field of nuclear energy comprehensive utilization.

The present invention concerns a metal material production configuration (1) and a method of direct reduction of a metal oxide material (5) holding a first thermal energy into a direct reduced metal material (16) by means of a metal material production configuration (1).The method comprises charging the metal oxide material (5), holding the first thermal energy, into a direct reduction facility (7); introducing a hydrogen, holding a second thermal energy, into the direct reduction facility (7).The invention involves reducing the metal oxide material (5) by using the first thermal energy of the metal oxide material (5) to heat or further heat the introduced hydrogen containing reducing agent (8) toward a required reaction temperature for providing a chemical reaction. A high-temperature exit gas (12) is removed from the direct reduction facility and fed to a high-temperature electrolysis unit (21) configured to produce the hydrogen.

The invention discloses a hardware-in-the-loop test system and method for a solid oxide high-temperature electrolysis system, which are used for testing the performance of a controller and an electrolysis power supply of an SOEC system. Comprising an electronic load used for simulating an electric pile body of an SOEC system and absorbing voltage and current output by an electrolysis power supply; the real-time simulation machine is used for operating a real-time simulation model, and the real-time simulation model is configured to be capable of simulating and outputting a virtual sensor signal of the galvanic pile according to the state parameters of the virtual actuator; and the peripheral board card is used for communication between the real-time simulation machine and the controller. According to the method, a virtual electric pile combining a multi-physics field coupled SOEC electric pile model and a high-dynamic electronic load is adopted to replace an SOEC electric pile entity for testing, so that the testing process can be parallelized and automated, the testing cost is remarkably reduced, and the research and development period is greatly shortened; by designing an integrated fault injection mechanism and a signal interface with a high security level, comprehensive verification of extreme faults is realized.

The invention provides an energy self-consistent method for a water electrolysis hydrogen production factory. The energy self-consistent method for the water electrolysis hydrogen production factory comprises the steps that high-temperature electrolyte in an electrolytic bath flows to a gas-liquid separator through a pipeline; the high-temperature electrolyte in the gas-liquid separator flows to the cascade energy storage tank; the cooled electrolyte flows to the electrolytic bath through a circulating pump; wherein gas in the gas-liquid separator flows into the gas diaphragm valve, and finally the gas respectively flows to the hydrogen purification equipment and the oxygen aftertreatment device through the gas diaphragm valve; and the first step heat storage tank is moved to a place needing heat from the water electrolysis hydrogen production side through the movable energy storage vehicle. Waste heat on the two sides of the system is more reasonably allocated through the movable energy storage vehicle, the energy utilization rate is increased, and the technical problem that in the prior art, an energy self-consistent system of an efficient heat utilization water electrolysis hydrogen production factory is lacked is solved.

The application belongs to the technical field of separation membranes, and discloses a high-temperature-resistant ceramic separation membrane and a preparation and application thereof.A high-temperature-resistant ceramic separation membrane is obtained by sequentially performing acid etching, hydrophobic material soaking and irradiation cross-linking treatment on a tubular membrane or a hollow fiber membrane.The high-temperature-resistant ceramic membrane effectively realizes the separation of hydrogen and water vapor at high temperature, realizes the reuse of high-temperature water vapor, reduces the consumption of heat energy and water resources in the high-temperature water vapor electrolysis technology, and significantly reduces the production cost in the high-temperature water vapor electrolysis process.

The invention relates to the field of hybrid supercapacitors, in particular to a high-temperature-resistant electrolyte for a supercapacitor and a preparation method and application of the high-temperature-resistant electrolyte. According to the high-temperature-resistant electrolyte, a composite multi-element functional additive is added into the high-temperature-resistant electrolyte, and the composite multi-element functional additive comprises fluoro boric acid ester TFEB (tris (2, 2, 2-trifluoroethyl) boric acid ester), 1, 3, 5-trimethyl-1, 3, 5-tris (3, 3, 3-trifluoropropyl) cyclotrisiloxane) and vinylene carbonate. Through the collaborative design of the composite multi-functional additive and the optimized solvent system, the performance stability of the hybrid supercapacitor in a high-temperature environment is remarkably improved.

The present invention relates to a cathode material for a solid oxide electrolysis cell, as well as its preparation and use. The molecular formula of the cathode material for a solid oxide electrolysis cell is La x Sr 1-x Fe 0.8 Cu y Ni 0.2-y O 3-δ (wherein 0.1≦x≦0.9, 0.01≦y<0.2, and 0≦δ≦0.5). An electrolysis cell prepared by using the cathode material can efficiently convert CO2 and HO into synthesis gas through electrochemical catalysis. Furthermore, the electrolysis cell can perform high-temperature electrolysis of water vapor and / or carbon dioxide at a temperature of 800°C and an electrolysis current density of 0.5 A / cm. 2 As a result, continuous and stable production can be achieved, and industrial applications are expected.

A continuous method includes passing a feed stream comprising steam and carbon dioxide, and one or more of a recycled tail gas stream and a methane-rich feed stream to a cathode of a first electrolyzer comprising the cathode, an anode and an electrolyte inserted between the cathode and the anode, thereby producing a cathode effluent comprising syngas, and passing the cathode effluent comprising syngas to a reactor unit, thereby producing a chemical product or a fuel-based product.

The application provides a temperature-controlled and localized whole-blade-disc rough and fine combined electrolytic machining device and method. The electrolytic machining device comprises a machining cathode and a partitioned temperature-controlled liquid supply assembly. The machining cathode is provided with a first flow channel with an outlet formed at an end portion, and a second flow channel is formed between two adjacent machining cathodes. The partitioned temperature-controlled liquid supply assembly supplies high-temperature electrolyte to the first flow channel and low-temperature electrolyte to the second flow channel in a first state, and supplies low-temperature electrolyte to the first flow channel and high-temperature electrolyte to the second flow channel in a second state. The temperature-controlled and localized whole-blade-disc rough and fine combined electrolytic machining device can make the machining cathode complete the separate machining of the blade channel and the blade by switching the state of the partitioned temperature-controlled liquid supply assembly, and other machining cathodes do not need to be replaced during the machining process, so that the rapid switching and continuous machining of the blade electrolytic rough machining and fine machining of the whole-blade-disc can be realized under lower structural complexity, and the electrolytic machining efficiency of the whole-blade-disc is improved.

The invention relates to fluorophenyl asymmetric lithium salt as well as a synthesis method and application thereof, belongs to the field of lithium ion batteries, and solves the problems that an existing film-forming additive is poor in stability, and the electrolyte viscosity and impedance of the lithium ion battery are increased after the electrolyte is introduced; the problems that an existing high-temperature electrolyte is poor in high-temperature stability, and a lithium ion battery is low in capacity retention capacity, poor in volume stability and poor in high-temperature cycle performance are solved. A fluorophenyl asymmetric lithium salt has various chemical structures, and R in the chemical structures is a substituent of any one or more sites on a benzene ring. The fluorophenyl asymmetric lithium salt is used for the lithium ion battery, and the prepared lithium ion battery is good in high-temperature stability, volume stability and high-temperature cycle performance and high in capacity retention capacity.

A system comprising two electrolysis subsystems for electrolysis of water to produce hydrogen, wherein the first subsystem produces waste thermal energy and the second uses this energy. One of the sub

The application discloses a high-temperature-resistant electrolyte membrane oxidation stability test method and device thereof. The high-temperature-resistant electrolyte membrane oxidation stability test method comprises the following steps: 1) obtaining a phosphoric acid-doped high-temperature-resistant electrolyte membrane; 2) placing the phosphoric acid-doped high-temperature-resistant electrolyte membrane in a mixed solution containing phosphoric acid and Fe 2+ , and heating; 3) introducing a carrier gas carrying H2O2 into the mixed solution, collecting tail gas, and analyzing the stability of the high-temperature-resistant electrolyte membrane through the tail gas. The method is a non-in-situ test method, can truly simulate the acidic environment in which the high-temperature-resistant electrolyte membrane is located, can indirectly reflect the internal changes of the high-temperature-resistant electrolyte membrane, can evaluate the influence of the acid content on the oxidation stability of the high-temperature-resistant electrolyte membrane, and has guiding significance for membrane electrode preparation.

The invention provides a device and a method for preparing methanol by combining new energy hydrogen production with biomass pressurized oxygen-enriched combustion. The device comprises a new energy hydrogen production unit, a biomass pressurized oxygen-enriched combustion unit, a methanol synthesis unit and a second high-temperature electrolysis unit, the new energy hydrogen production unit comprises a photovoltaic module, a wind power module and a first high-temperature electrolysis unit; the photovoltaic module and the wind power module are connected with the first high-temperature electrolysis unit; the new energy hydrogen production unit and the biomass pressurized oxygen-enriched combustion unit are both connected with the methanol synthesis unit; and the biomass pressurized oxygen-enriched combustion unit is connected with the second high-temperature electrolysis unit. The new energy hydrogen production unit is used for producing green hydrogen, the biomass pressurized oxygen-enriched combustion unit is used for producing green carbon dioxide, then green methanol synthesis is carried out, the biomass utilization efficiency is effectively improved, meanwhile, the green methanol preparation cost is reduced, and the method is suitable for large-scale application and popularization.

The invention relates to the technical field of lithium ion batteries, and discloses a composition for a high-temperature electrolyte, the high-temperature electrolyte, a preparation method of the high-temperature electrolyte and a lithium ion battery. The composition for the high-temperature electrolyte contains a lithium salt, a solvent, a film-forming additive and a high-temperature additive, on the basis of the total weight of the high-temperature electrolyte, the content of the lithium salt is 10-14 wt%, the content of the solvent is 75-85 wt%, the content of the film-forming additive is 3-6 wt%, and the content of the high-temperature additive is 1-5 wt%; the high-temperature additive is a combination of a fluorobenzene compound and thiosemicarbazone in a mass ratio of 1: (0.8-1.2). The high-temperature electrolyte provided by the invention can obviously improve the high-temperature cycle performance of the lithium ion battery.

The invention discloses an alkaline electrolytic bath with a backflow temperature equalizing structure. The alkaline electrolytic bath comprises an electrolytic bath body and a backflow temperature equalizing assembly. The electrolytic cell body comprises bipolar plates, a pole frame and an electrolyte inlet and outlet, electrolyte flows in the inlet and outlet direction, and the bipolar plates are oppositely arranged to define a small electrolytic chamber. A backflow channel is formed in the backflow temperature equalizing assembly, one end of the channel is connected with the electrolyte outlet, and the other end of the channel extends to the inlet area. A flow guide structure is arranged at the electrolyte inlet, at least two flow dividing channels can be divided, the flow dividing channels comprise a low-temperature channel communicated with the inlet and a high-temperature channel communicated with the backflow channel, and the flow guide structure guides electrolyte in the two channels to be mixed and then flow into the small electrolysis chamber. An internal circulation channel is constructed through the backflow temperature equalizing assembly, heat of high-temperature electrolyte at an outlet is recycled, and the problem that the temperature in small electrolysis chambers and the temperature between the small chambers are not uniform due to one-way flowing of electrolyte in a traditional alkaline electrolytic cell is effectively solved.

The invention relates to the technical field of nuclear energy, new energy and chemical industry crossing, and discloses a nuclear energy-based zero-carbon system, which comprises a fresh water subsystem; the CO2 trapping subsystem is used for trapping CO2 gas from the air; the high-temperature electrolysis subsystem is used for receiving the CO2 gas transmitted from the CO2 capturing subsystem and the water vapor transmitted from the fresh water subsystem so as to prepare mixed synthesis gas through electrolysis; the nuclear energy subsystem supplies heat and power to the fresh water subsystem, so that the fresh water subsystem generates water vapor and supplies power to the CO2 capturing subsystem and the high-temperature electrolysis subsystem; and the chemical raw material synthesis subsystem is used for receiving the synthesis gas transmitted by the high-temperature electrolysis subsystem so as to prepare chemical raw materials. Heat energy and electric energy of the nuclear energy subsystem are directly utilized, nuclear energy and chemical production are organically combined, multi-energy complementation and gradient utilization of energy are achieved, the energy utilization efficiency is improved, the energy source is expanded, carbon emission is reduced, and a zero-carbon system is constructed.

This invention belongs to the field of solid oxide electrolytic cells technology and discloses a method for regenerating the performance of a transition metal-doped cerium-based cathode used in high-temperature carbon dioxide electrolysis. The regeneration method involves placing a single cell for high-temperature carbon dioxide electrolysis at an open-circuit voltage and continuously introducing gas into the cathode side at 500-900°C for regeneration, thereby restoring the cathode performance of the single cell. The cathode of the single cell is prepared from cerium-based cathode material. Continuously introducing gas into the cathode side refers to introducing air, CO2, or a mixture thereof, with a gas flow rate of 30-200 mL / min. This invention effectively removes carbonate intermediates or inert species accumulated on the cathode surface during long-term operation, significantly restoring electrochemical activity without damaging the electrode structure. The process is simple and can be completed in situ. After regeneration, the electrolytic performance and long-term stability of the cerium-based cathode material are significantly improved, effectively extending the service life of the solid oxide electrolytic cell.

The application relates to a hydrogen production fast starting and water supplementing system and method based on waste heat utilization of alkaline electrolysis water, which comprises an alkaline electrolysis tank, an alkali storage tank, a first-stage indirect heat exchanger, a membrane distillation system, a water supplementing system, a heat preservation loop, an auxiliary electric heating device and a control system. High-temperature electrolyte discharged from a running electrolysis tank is exchanged with alkali liquor in the alkali storage tank through the first-stage indirect heat exchanger, and the waste heat is stored in the alkali storage tank; the electrolyte after heat exchange enters the membrane distillation system to remove water, and the produced water returns to the electrolysis tank through the water supplementing system. When the machine is stopped, the heated alkali liquor in the alkali storage tank is injected into the stopped electrolysis tank through the heat preservation loop to maintain the temperature of the stack; when the waste heat is insufficient, the auxiliary electric heating device is started to supplement the heat. The application realizes the hot standby of the stopped tank stack and the electrolytic alkali liquor through the cooperation of waste heat recovery and heat preservation, shortens the starting time by about 50%, reduces the energy consumption, and is suitable for renewable energy fluctuation power supply.

The invention relates in particular to a method for manufacturing a single repeating unit (SRU) for an electrochemical device, in particular for a high-temperature electrolyser or a high-temperature fuel cell, said assembly comprising an interconnector (1), comprising at least a first plate (10) and a second plate (11, 12, 18, 19) which are superposed with respect to one another, and at least one current collector (21, 22). The method comprises the following steps: a) applying a braze filler material to one of the two plates, b) superposing the plates to form a single repeating unit (SRU), c) positioning in a furnace (4) so that the filler material melts and said at least two plates of said unit become brazed together.

This invention discloses a surface treatment process for metal tubes used in tables and chairs, comprising: low-temperature degreasing and activation treatment of the metal tubes; non-electrolytic micro-arc etching treatment of the activated metal tubes; immersion of the etched metal tubes in a composite silane-rare earth conversion solution; low-temperature gradient drying treatment of the conversion film layer; coating the dried conversion film surface with a nano-scale ceramic-doped epoxy primer; infrared pre-curing treatment of the primer layer; electrostatic spraying of a composite wear-resistant powder coating on the pre-cured primer surface; step-by-step temperature-curing treatment of the sprayed metal tubes; and natural air cooling of the cured metal tubes to room temperature to complete the surface treatment. This process eliminates the need for high-temperature electrolysis equipment, is simple to operate, environmentally friendly and energy-saving, and can significantly improve the corrosion resistance, coating adhesion and wear resistance of metal tubes. It boasts a high product qualification rate, is suitable for the daily use needs of metal tubes used in tables and chairs, and possesses excellent practicality and innovation.

The application relates to the field of aluminum electrolytic capacitors, and discloses a high-temperature-resistant aluminum electrolytic capacitor and a preparation process thereof. The high-temperature-resistant aluminum electrolytic capacitor comprises a shell, a capacitor core and a rubber plug, the capacitor core is accommodated in the shell, the rubber plug is used for sealing the shell, the capacitor core is prepared by immersing a core body in a high-temperature-resistant electrolyte, the core body is formed by winding an anode aluminum foil, a cathode aluminum foil and electrolytic paper, and the electrolytic paper is arranged between the anode aluminum foil and the cathode aluminum foil; the high-temperature-resistant electrolyte is prepared from the following raw materials in percentage by weight: 55-64% of a solvent, 20-30% of a solute, 4-8% of a stabilizer, 3-4.5% of a glycidyl ester substance, 2-4% of a flash voltage enhancer, 1.5-3.5% of a corrosion inhibitor and 0.5-1% of a hydrogen removal agent. The aluminum electrolytic capacitor has good high-temperature resistance, good charge storage and release stability, and good reliability and stability in long-term use in a high-temperature environment.

The invention discloses a PEM and SOEC cooperative work synthesis gas preparation and methanol synthesis system and method, and relates to the field of methanol synthesis, and the method comprises the following steps: a PEM hydrogen production unit drives electrolyzed water to react through renewable electric power to generate H2; the SOEC electrolysis unit electrolyzes CO2 at high temperature to generate mixed gas of CO and CO2; the PSA carbon removal unit is used for removing CO2 in the mixed gas and outputting purified CO; the mixer is used for mixing CO and H2 to generate synthesis gas; the methanol synthesis reactor catalyzes synthesis gas to generate methanol; the coordination controller is used for coordinating and controlling the working states of the PEM hydrogen production unit, the SOEC electrolysis unit, the PSA carbon removal unit and the methanol synthesis reactor, so that the system is switched among the states of starting, normal operation, idling, shutdown and emergency shutdown. By adopting a combined scheme of a PEM hydrogen production technology and an SOEC high-temperature electrolysis CO2 technology, the efficiency and sustainability of a methanol production process are remarkably improved.

The invention relates to the technical field of electrolytic zinc production and industrial cooling, and discloses a device for rapidly and conveniently cleaning a high-temperature solution before electrolysis of electrolytic zinc and efficiently dissipating heat and cooling the high-temperature solution before electrolysis of the electrolytic zinc, the device comprises a tower body, a spraying device, an air blowing system and a composite internal part, and the bottom of the tower body is fixedly installed on the ground through a ground anchor; the height of the tower body is two meters higher than that of a traditional cooling tower. The height of the tower body is increased by two meters compared with that of a traditional cooling tower, and the gas-liquid contact space is increased; the spraying device adopts a fine hole spray head integrated design, a high-temperature solution before electrolysis is atomized into tiny liquid drops, the tiny liquid drops are in countercurrent full contact with cold air blown by an air blowing system (the air volume is 4.0 * 10 < 4 > m < 3 > / h and the air pressure is 242Pa), the liquid before 65-DEG C high-temperature electrolysis can be cooled to 35 DEG C in a short time, the cooling water volume reaches 26m < 3 > / h, and the continuous treatment requirement of annual production of 15,000 tons of electrolytic zinc is met; the air blowing system and the spraying device are in linkage operation, the air volume is accurately matched with the spraying volume, the heat dissipation efficiency is improved by 40% compared with a traditional device, and the cooling time is greatly shortened.

A continuous method includes passing a first steam feed stream and one or more of a recycled tail gas stream and a methane-rich feed stream to a cathode of a first electrolyzer containing the cathode, an anode and an electrolyte inserted between the cathode and the anode, thereby producing a cathode effluent including syngas, and passing the cathode effluent including syngas to a reactor unit, thereby producing a chemical product or a fuel-based product.