64 results about "Solid oxide electrolyser cell" patented technology

The present disclosure provides a system and a method for steel synthesis using green hydrogen by coupling renewable energy and Carnot batteries with Solid-Oxide Electrolyser Cells (SOEC) and carbon capture. The system provides an end-to-end, geography-agnostic solution for steel synthesis with green hydrogen with round-the-clock renewable energy using Carnot battery that provides both heat and power to run an SOEC at a high efficiency. The hydrogen from the SOEC may be used for direct reduction of iron followed by steel synthesis in an Electric Arc Furnace. The heat from the SOEC is also used for capturing CO2 from the exhaust gases (or air in the DAC configuration). The captured CO2 may be used for electrofuels synthesis along with green hydrogen or electrochemically reduced to carbon. The process heat from DRI and EAF is recycled back to the Carnot batteries.

To produce high-purity, high-pressure hydrogen while aiming to improve energy efficiency.SOLUTION: An electrolysis system includes: an electrolysis module comprising a solid oxide electrolytic cell that produces hydrogen by water vapor electrolysis and a thermal insulation housing container that accommodates the electrolytic cell; a water vapor feed line that supplies water vapor to the electrolytic cell; and an electrochemical pump accommodated in the housing container. The electrochemical pump has a pump cell including a solid electrolyte, an anode, and a cathode, and is connected to the electrolytic cell so as to direct off-gas containing hydrogen produced in the electrolytic cell and unreacted water vapor into the inlet of the anode. The electrochemical pump is connected to a hydrogen recovery line to output pressurized hydrogen from the cathode outlet to the outside of the housing container, and is connected to a hydrogen supply line to output the remaining hydrogen and water vapor from the anode outlet to the water vapor feed line inside the housing container.SELECTED DRAWING: Figure 1

To provide a carbon dioxide electrolytic apparatus in which carbon deposition can be effectively suppressed in a solid oxide electrolysis cell for electrolyzing a carbon dioxide.SOLUTION: A carbon dioxide electrolytic apparatus relating to the present disclosure includes a solid oxide electrolysis cell for generating a carbon monoxide by electrolyzing a carbon dioxide supplied to a fuel electrode. The apparatus includes a carbon dioxide supply system for supplying the carbon dioxide to the fuel electrode and a hydrogen supply system for supplying hydrogen to the fuel electrode. Thus, the carbon deposition can be effectively suppressed in the solid oxide electrolysis cell without significantly increasing the temperature of the solid oxide electrolysis cell.SELECTED DRAWING: Figure 1

The present disclosure provides system and method for synthesis of green ammonia and other nitrogenous fertilizers derived from it including urea and nitric acid (as well as others that may be produced by any combination / reaction of these) by coupling renewable energy and Carnot battery with Solid-Oxide Electrolyser Cell (SOEC) and Direct Air Capture (DAC). 5 The system provides a solution for round-the-clock renewable energy using Carnot battery that provides both heat and power to run SOEC. The heat from Carnot battery is used by DAC to capture carbon dioxide from air. A nitrogen-oxygen generator may produce nitrogen using continuous power from Carnot battery. Ammonia may be produced by using hydrogen from SOEC, and nitrogen from the nitrogen-oxygen generator. Urea may be produced using 0 carbon dioxide from DAC and ammonia. Ammonia and oxygen from SOECs and nitrogen- oxygen generator may be used for synthesis of nitric acid, and other nitrogenous fertilizers. The process heat from ammonia and nitric acid synthesis is recycled back to the Carnot battery.

The invention relates to an electrochemical cell unit comprising the following, in the following order across its thickness: a hydrogen electrode (200) comprising a support electrode layer (203) and a functional electrode layer (204) stacked one on top of the other; a solid electrolyte (300) comprising a thin layer (302) having a first surface (305) and a second surface (306); and an oxygen electrode (400), characterised in that the solid electrolyte (300) comprises a frame (303) which extends from the first face (305) of the thin layer (302) and forms a cavity (304) in which the hydrogen electrode (200) is at least partially arranged. The invention relates to the optimisation of a solid oxide cell, including solid oxide fuel cells and solid oxide electrolyser cells.

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

The present disclosure relates to a heat management method in a methanol-generating unit remarkable in the reactor (100) of the methanol-generating unit comprises a cooling device and wherein the steam (5, 7) recovered from said cooling device has a pressure that is suitable for being fed into the one or more solid oxide electrolyser cells (400), so as to provide a hydrogen-rich effluent (15) that is used to enhance the efficacy of the separation unit necessary for the methanol production.

The present disclosure relates to a method of using flue gas heat resulting from a combustion reaction, comprising: a) providing a fuel and an oxidant; b) preheating the fuel and the oxidant to produce a preheated fuel and a preheated oxidant; c) feeding the preheated fuel and preheated oxidant to a combustion chamber; d) heating raw materials via the combustion reaction of the preheated fuel with the preheated oxidant in the combustion chamber and generating flue gas; e) transferring at least part of the heat of the flue gas exiting the combustion chamber to an intermediate fluid, thereby producing a heated intermediate fluid; f) heating a Solid Oxide Electrolyzer Cells (SOEC) unit to a SOEC operating temperature, g) exchanging heat using at least part of the heat of the heated intermediate fluid, h) providing a steam stream at a steam stream temperature and an oxygen-containing carrier gas at an oxygen-containing carrier gas temperature, and feeding the steam stream and the oxygen-containing carrier gas to the SOEC unit to produce an oxygen-containing stream and a hydrogen-containing stream; wherein exchanging heat comprises 1. preheating the fuel to produce the preheated fuel to be fed to the combustion chamber and / or 2. preheating the oxidant to produce the preheated oxidant to be fed to the combustion chamber. The present disclosure also relates to a system of using flue gas heat from a combustion reaction.

To produce high-purity hydrogen while suppressing the deterioration in heat efficiency when the off-gas discharged from an electrolytic cell is recirculated to the electrolytic cell.SOLUTION: An electrolysis system includes: an electrolysis module comprising a solid oxide electrolytic cell and a thermal insulation housing container that accommodates the electrolytic cell; a water vapor feed line that supplies water vapor to the electrolytic cell; and a hydrogen separation unit having a metal hydrogen-permeable membrane and accommodated in the housing container, which receives off-gas containing produced hydrogen and water vapor discharged from the electrolytic cell, outputs the produced hydrogen that has permeated the hydrogen-permeable membrane to a produced hydrogen line outside the housing container, and outputs the produced hydrogen and water vapor that have not permeated the hydrogen-permeable membrane to the water vapor feed line within the housing container. The housing container has a first storage space that accommodates the electrolytic cell, and a second storage space that is maintained at a temperature lower than that of the first storage space. The hydrogen separation unit is accommodated in the second storage space.SELECTED DRAWING: Figure 1

The invention relates to a system and method for producing pressurized hydrogen from a solid oxide electrolyser connected to an electrochemical hydrogen compressor The system comprises a solid oxide electrolyser (SOEC) (1), which is configured to generate hydrogen; an electrochemical hydrogen compressor (EHC) (2), which is configured to pressurize said hydrogen generated by said SOEC; and a first recovery circuit, which is configured to recover water exiting the cathode (2c) of the EHC (2) by providing a return path through the EHC (2) to the cathode (1C) of the SOEC (1) for consumption. An optional second recovery circuit is configured to recover heat from at least one output flow (4, 5) of the SOEC (1) to a heat exchanger (15), which is configured to heat said return path (4, 18) at the cathode (1C) of said solid oxide electrolyser (1).

Provided is a solid oxide electrolysis cell in which the electrode layer thereof is prevented from peeling, and that has excellent strength (reliability), durability, and performance. A solid oxide electrolysis cell E includes at least: a first electrode layer 6; a second electrode layer 2; and an electrolyte layer 4 disposed between the first electrode layer 6 and the second electrode layer 2, wherein the first electrode layer 6 has at least a plurality of pores each having an area of 0.75 µm2 or more in a vertical cross section thereof.

An ammonia production system according to the present invention comprises: a solid oxide electrolysis cell (10) to which a gas containing water vapor and nitrogen is supplied, and which generates hydrogen and ammonia through an electrolytic reaction of the supplied gas; a water vapor supply line (L10) that guides the water vapor to the solid oxide electrolysis cell (10); a separation unit (60) that guides a mixed gas which was discharged from the solid oxide electrolysis cell (10) and contains ammonia, hydrogen, and nitrogen, and separates the hydrogen and nitrogen contained in the mixed gas; and a circulation line (L32) that guides the hydrogen and nitrogen separated by the separation unit (60) to the water vapor supply line (L10).

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

A method of operating an electrolyzer system includes electrolyzing water into oxygen and inlet hydrogen using a polymer electrolyte cell (PEC) module including PECs, providing the inlet hydrogen to solid oxide electrolyzer cell (SOEC) modules that each include at least one SOEC stack, providing steam to the SOEC modules, and electrolyzing the steam to generate oxygen and a main product stream containing hydrogen.

The invention belongs to the technical field of solid oxide electrolytic cell (SOEC) anode preparation, and relates to an SOEC anode microchannel preparation method adopting a freeze casting process and an anode structure. The preparation method comprises the following steps: S1, preparing slurry: adding YSZ powder, a latex emulsion binder, a magnesium aluminum silicate thickener and an ammonium polyacrylate dispersant into deionized water according to a mass ratio of 8: 1.5: 0.5: 0.3, and stirring to form uniform slurry with the solid content of 40-50%; the vertical micro-channel stent is realized through a directional freezing casting process, so that the oxygen transmission efficiency is remarkably improved; the low-temperature constant-temperature stirring reaction bath adopts a dry ice solvent bath method, the preparation and maintenance of the method are simple and easy to operate, the temperature reproducibility of the dry ice solvent bath is better, and the change of the steady-state temperature can be controlled within the range of + / -1 DEG C.

A solid oxide electrolyzer cell (SOEC) includes a solid oxide electrolyte, a fuel-side electrode disposed on a fuel side of the electrolyte, and an air-side electrode disposed on an air side of the electrolyte. The air-side electrode includes a barrier layer disposed on the air side of the electrolyte and including a first doped ceria material, and a functional layer disposed on the barrier layer and including an electrically conductive material and a second doped ceria material.

The present application relates to a kind of solid oxide electrolytic cell-magnesium-based solid hydrogen storage device system and its hydrogen filling control method, the system includes solid oxide electrolytic cell (1), magnesium-based solid hydrogen storage device (12), hydrogen filling control system (14), and logic control system based on fuzzy logic controls hydrogen filling process.The present application proposes a kind of solid oxide electrolytic cell-magnesium-based solid hydrogen storage device system, and utilizes fuzzy intelligent control technology to adjust heat exchange medium flow, on-line controls hydrogen absorption temperature, realizes the rapid transfer of hydrogen absorption process heat, improves the electrolytic efficiency of solid oxide electrolytic cell, with high electrolytic efficiency, high volume hydrogen storage density, and the advantages such as convenient operation method.

The present disclosure provides system and method for gasification-based fuel synthesis by coupling it with green hydrogen produced using renewable energy, Carnot battery, and Solid- Oxide Electrolyser Cell (SOEC), with CO2 capture during gasification. The system provides an end-to-end solution for round-the-clock green hydrogen production using renewable energy sources coupled with a Carnot battery to run an SOEC. The SOEC produces oxygen and hydrogen from the continuous heat and power received from the Carnot battery. The oxygen is sent to a gasifier for gasification. The process of gasification includes a series of chemical reactions where the oxygen from SOEC and steam may be reacted with an organic feedstock to convert it to synthetic gas, which is further enriched with hydrogen produced by SOEC, to produce fuels. The CO2 captured from this process is further reacted with green hydrogen from SOEC to produce a parallel stream of electrofiiels. The heat generated during gasification-based fuel synthesis and electrofuels synthesis is recycled back to the Carnot battery.

This invention discloses a multi-electrolyzer-short-process steelmaking collaborative scheduling method for risk mode selection and switching, belonging to the fields of energy system engineering and iron and steel metallurgy. It includes: generating multiple random photovoltaic output scenarios based on photovoltaic output characteristics under different weather conditions; using an inverse cumulative distribution function to transform historical data into power boundaries at different confidence levels, generating dynamic safety envelopes for three risk modes: aggressive, robust, and risk-averse; introducing binary variables to represent the selected risk mode at each moment and imposing penalties for mode switching; employing McCormick's soft boundary envelope linearization technique for the bilinear term and introducing relaxation variables to construct flexible linearization constraints; establishing a tiered carbon trading mechanism to divide excess emissions into multiple price tiers; and establishing a multi-entity collaborative operation model with the goal of minimizing total operating costs, coordinating energy storage, steelmaking, and hydrogen production subsystems including alkaline, proton exchange membrane, and solid oxide electrolyzers to determine the optimal operating strategy. This invention solves the steel production safety risk problem caused by the limitation of a single electrolyzer and the uncertainty of renewable energy in the large-scale application of electrolyzers.

The present disclosure provides system and method for gasification-based fuel synthesis by coupling it with green hydrogen produced using renewable energy, Carnot battery, and Solid- Oxide Electrolyser Cell (SOEC), with CO2 capture during gasification. The system provides an end-to-end solution for round-the-clock green hydrogen production using renewable energy sources coupled with a Carnot battery to run an SOEC. The SOEC produces oxygen and hydrogen from the continuous heat and power received from the Carnot battery. The oxygen is sent to a gasifier for gasification. The process of gasification includes a series of chemical reactions where the oxygen from SOEC and steam may be reacted with an organic feedstock to convert it to synthetic gas, which is further enriched with hydrogen produced by SOEC, to produce fuels. The CO2 captured from this process is further reacted with green hydrogen from SOEC to produce a parallel stream of electrofiiels. The heat generated during gasification-based fuel synthesis and electrofuels synthesis is recycled back to the Carnot battery.

The present invention discloses a method and system for optimizing and controlling a hybrid water electrolysis hydrogen production system. The method adopted by the present invention includes: establishing a hybrid water electrolysis hydrogen production system including a wind turbine, photovoltaics, an alkaline electrolyzer, a proton exchange membrane electrolyzer, a solid oxide electrolyzer and an energy storage device; establishing a unified and universal mathematical model; considering the differences in dynamic response speeds of different types of electrolyzers, combining a low-pass filtering algorithm, and adopting a multi-stage controlled optimized control of the hybrid water electrolysis hydrogen production system; constructing an objective function with minimizing operating costs as the control target, considering the electricity purchase cost, energy storage use cost, wind and solar power abandonment cost, hydrogen sales income and electrolyzer start-up and shutdown cost, and using the branch and bound method to solve the control scheme of the hybrid water electrolysis hydrogen production system. The present invention realizes the coordinated control of multiple types of electrolyzers and the differentiated utilization of different types of electrolyzers, thereby improving the operating economy and energy utilization efficiency of the hybrid water electrolysis hydrogen production system.

An apparatus can include a housing, a plurality of electrochemical devices disposed within the housing, and a heat exchanger disposed within the housing. The heat exchanger can be faced with an oxidant-containing gas outlet surface of at least one of the plurality of electrochemical devices. The electrochemical devices can include a stack of solid oxide fuel cells, a battery, or a solid oxide electrolyzer cell.

The invention relates to an assembly for an electrochemical module, comprising a stack (1) of solid oxide electrolyser cells or solid oxide fuel cells, the stack being positioned between an upper end plate (2) and a lower end plate, each of the upper and lower end plates respectively comprising a part for connection to a current rod (5), which comprises an opening (4) formed in the upper and / or the lower end plate, accommodating the current rod (5), and also a notch (6) which is made in the thickness of the plate and extends as far as the opening (4), defining in the plate a first portion (61) and a second portion (62) which are able to be forced against the current rod (5).

A method of operating a solid oxide electrolyzer cell stack includes providing steam into a fuel internal riser extending through the solid oxide electrolyzer cell stack at a pressure of at least 15 psig, and electrolyzing the steam in the solid oxide electrolyzer cell stack to generate a hydrogen containing product stream at a pressure of at least 15 psig.

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 substance different from the composite oxide, the substance containing at least one of cobalt and iron, and an area occupancy ratio of the 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 relates to the technical field of carbon spreading and carbon conversion, in particular to a direct air trapping and solid oxide electrolysis coupled carbon conversion system and method, and the carbon conversion system comprises a direct air trapping module and a solid oxide electrolytic cell module, the solid oxide electrolytic cell module is connected with the direct air trapping module through a heat energy recovery path, and the heat energy recovery path is configured to drive an adsorbent regeneration process of the direct air trapping module by utilizing reaction waste heat generated by the solid oxide electrolytic cell module. The direct air trapping module comprises an adsorption reactor and a buffer tank. By adopting the carbon conversion system, air flow fluctuation is smoothed to a quasi-stable state by the buffer tank, so that stable air intake of the solid oxide electrolytic cell is guaranteed; reaction waste heat of the solid oxide electrolytic cell is guided for adsorbent regeneration, so that the overall energy consumption of the system is reduced; the cation doped and modified composite cathode can adapt to the dynamic fluctuation of the CO2 concentration in a wide range, and the operation stability of the system is improved.

A modular solid oxide electrolyzer cell (SOEC) system including a stack of electrolyzer cells configured to receive steam in combination with hydrogen, and a steam recycle outlet configured to recycle a portion of the steam.

The present disclosure relates to a heat management method in a methanol-generating unit coupled to one or more solid oxide electrolyser cells (400) remarkable in that a water stream (23) is subjected to a transfer of thermal energy of an oxygen-containing effluent (13) exiting the one or more solid oxide electrolyser cells (400) so that an additional stream (25) of steam is generated and can transfer its own thermal energy to a separation unit that is downstream the methanol-generating unit.

The invention belongs to the technical field of solid oxide electrolytic cells, and particularly discloses a multi-scene dynamic control method, system and equipment for an electric pile of a solid oxide electrolytic cell. According to the application, a target dynamic control strategy is determined according to a current scene; according to the target dynamic control strategy, adjusting operation parameters of each component in a target system where the solid oxide electrolytic cell stack is located; generating cathode side gas according to the input water flow and the input hydrogen; an anode-side gas is generated from the input air. Through the above mode, the target dynamic control strategy adapted to the current scene of the solid oxide electrolytic cell stack is formulated, the operation parameters of each assembly are adjusted according to the target dynamic control strategy, and the operation parameters comprise the gas circulation ratio determined according to the operation characteristics of the stack. And then different gases are generated based on the target system after parameter adjustment, so that the stability of the galvanic pile running in multiple scenes can be effectively improved, the damage of parts is reduced, and the service life of the galvanic pile is prolonged.

The invention belongs to the field of bipolar plates, and particularly discloses a bipolar plate structure for improving mass and heat transfer capacity of a solid oxide electrolytic bath, which comprises a cathode plate body and an anode plate body, and an electrode material is arranged between the cathode plate body and the anode plate body. Parallel runner flow fields are formed in one sides, facing the electrode material, of the cathode plate body and the anode plate body; the parallel flow channel flow field comprises a plurality of parallel straight flow channels, opening structures are formed in the two ends of each straight flow channel, flow blocking assemblies used for disturbing airflow are arranged in the straight flow channels in the axis direction of the straight flow channels, and the flow blocking assemblies are arranged so that a plurality of flow limiting areas can be formed in the straight flow channels in the axis direction of the straight flow channels. According to the structural design, the flow blocking assembly is arranged in the straight flow channel, so that the airflow forms a plurality of flow limiting areas in the flow channel, the airflow speed is reduced, local turbulence is formed, and the design can effectively disturb a laminar flow boundary layer, induce secondary flow, enhance turbulence and remarkably improve mass transfer and heat transfer performance.