24 results about "Solid oxide electrolyser cell" patented technology

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).

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.

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.

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 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.

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.

Techniques for fabricating a solid oxide electrolyzer cell (SOEC) including sintering an electrolyte, printing a fuel-side electrode disposed on a fuel side of the electrolyte, printing an air-side electrode disposed on an air side of the electrolyte, first sintering a combination of the electrolyte, fuel-side electrode, and air-side electrode, printing a barrier layer an air side of the electrolyte, printing a functional layer on the barrier layer, printing a collector layer on the functional layer, and second sintering a combination of the electrolyte, fuel-side electrode, air-side electrode, barrier layer, functional layer, and collector layer.

An electrolyzer system including a hotbox, one or more stacks disposed within the hotbox, a fuel exhaust conduit that receives fuel exhaust output by the stack, a fuel exhaust separator that separates liquid from the fuel exhaust, and a recycling conduit that fluidly connects the fuel exhaust to the fuel inlet conduit.

The present application relates to carbon paving set and carbon conversion technical field, especially to direct air capture coupling solid oxide electrolysis carbon conversion system and method, wherein, carbon conversion system, including: direct air capture module, solid oxide electrolysis tank module, solid oxide electrolyysis tank module and direct air capture module are connected through heat energy recovery path, and heat energy recovery path is configured to utilize the reaction waste heat generated by solid oxide electrolysis tank module to drive the adsorbent regeneration process of direct air capture module.Direct air capture module includes adsorption reactor and buffer tank.The present application is through adopting the carbon conversion system, airflow fluctuation is smoothed as quasi-steady state by buffer tank, and the stable air inlet of solid oxide electrolysis tank is guaranteed;The reaction waste heat of solid oxide electrolysis tank is guided to be used for adsorbent regeneration, and the overall energy consumption of system is reduced;The composite cathode modified by cation doping can adapt to the dynamic fluctuation of wide range CO2 concentration, and the operation stability of system is improved.

A solid-state electrolyte sheet includes stabilized zirconia grains having from 3 mol % to 12 mol % of a dopant selected from alumina, cerium oxide, gadolinium oxide, scandia, yttria, ytterbia, and combinations thereof. In aspects, the solid-state electrolyte sheet exhibits an ionic conductivity of 6.79 S / m or more at 800° C. or 8.8 S / m or more at 835° C. In aspects, the stabilized zirconia grains can exhibit a ratio of a cubic phase to a tetragonal phase (C / T ratio) of 0.12 or more. In aspects, the solid-state electrolyte sheet can be part of a solid oxide fuel cell and / or a solid oxide electrolyzer cell. Methods include casting a green tape comprising stabilized zirconia and firing the green tape by heating to form a sintered tape and then quenching the sintered tape from a starting temperature of 600° C. or more to a final temperature of less than 100° C.

A green hydrogen production unit may have at least one solid oxide electrolyzer cell (SOEC) to generate hydrogen gas from water by electrolysis. A green power supply may be coupled to the at least one SOEC. A green back-up power supply may be coupled to the at least one SOEC.

The invention relates to an assembly for an electrochemical module, comprising a stack (1) of solid oxide electrolyzer cells or solid oxide fuel cells, said stack being positioned between an upper terminal plate (2) and a lower terminal plate, each of the upper and lower terminal plates respectively comprising a connection portion for a current rod (5), which includes an opening (4) formed in said upper and / or lower terminal plate, receiving the current rod (5), as well as a notch (6) formed in the thickness of the plate and extending to said opening (4), defining in the plate a first portion (61) and a second portion (62) which are adapted to be constrained against said current rod (5). Figure for the abstract: [Fig.1]

"Individual tower, for stacks of single repeating units of high-temperature solid oxide electrolyzers or solid oxide fuel cells, and casing for such individual tower" Individual tower (1), for stacks (2) of single repeating units (SRU) (11) of high-temperature solid oxide electrolyzers (SOEC) or solid oxide fuel cells (SOFC), comprising a fluid collection element, referred to as the fluid collector, arranged to collect / distribute fluids to / from the individual tower, an electrical collector assembly (4), referred to as the electrical collector (4), arranged to connect, route, and isolate, within the tower, the electrical monitoring / control and / or command cables for the stacks and the individual tower elements requiring monitoring / control and / or command, two power bars (5, 6): arranged to route electricity to / from the SRUs and connected to the stacks via,respectively, an upper end plate (71) and a lower end plate (72), heating blocks (8) arranged to heat the stacks. Figure for the abbreviation: Figure 6,

This invention discloses a steam generator and a steam generation assembly, relating to the field of steam generator technology. The steam generator is used for hydrogen production via solid oxide electrolysis. The steam generator includes a porous media layer, a partition, and two side plates. The porous media layer comprises a foamed metal porous structure or a microchannel structure. An electric heater is installed on the outer wall of each side plate. The partition is made of a high-temperature resistant metal material with excellent thermal conductivity and is positioned between the two side plates. The partition forms an interconnected evaporation chamber and a steam channel. The steam channel is located at the top of the evaporation chamber. The partition forms a liquid water inlet and a steam outlet, with the steam outlet located above the liquid water inlet. The porous media layer fills the evaporation chamber. The liquid water inlet is connected to the porous media layer, and the steam outlet is connected to the steam channel. The use of electric heaters on both sides achieves uniform heating, and the porous media layer effectively prevents excessive steam pressure fluctuations.

The present invention relates to a waste incineration facility and a waste incineration method. This waste incineration facility comprises: a steam turbine generator to which superheated steam is supplied; and a solid oxide electrolysis cell that electrolyzes steam.

The invention relates to the technical field of renewable energy power generation, in particular to a methanol fuel cell and photovoltaic synergetic carbon dioxide electrolytic hydrogen production system and method. The system comprises a methanol reforming module, a fuel cell module, a gas turbine module, a photovoltaic power generation module and a solid oxide electrolytic cell module, the methanol reforming module firstly converts methanol and water into hydrogen-rich synthesis gas, then the hydrogen-rich synthesis gas is conveyed to the fuel cell module for power generation, and the generated electric energy is directly supplied to the solid oxide electrolytic cell module for electrolytic reaction; the gas turbine module cooperates with the output of the fuel cell to jointly meet the lowest load requirement of the electrolytic cell, and the photovoltaic power generation module increases the operation load of the electrolytic cell by supplementing electric energy, so that the electrolytic cell is always kept in an efficient hydrogen production interval. And capture and resource conversion of carbon dioxide are realized.

The invention belongs to the field of intelligent control, and particularly discloses an SOEC multi-parameter cooperative control method and a thermal management system.The method comprises the steps that operation parameters of a solid oxide electrolytic cell SOEC system are received, and the operation parameters comprise the hydrogen production requirement, the temperature gradient and the temperature change rate; establishing a dynamic feedback control model, inputting the operation parameters into the dynamic feedback control model, and generating a control instruction based on the operation parameters and an optimized set value; the solar panel tilt angle is adjusted based on the control instruction to control photovoltaic output power, the flow of water vapor entering the SOEC is adjusted to control an internal heat source and perform heat neutralization, and the flow of air entering the SOEC is adjusted to assist in heat management and balance temperature gradient. By means of the method, safe and stable operation of the SOEC can be guaranteed, and the electrolysis efficiency and the hydrogen yield are improved.

This system efficiently separates the generated hydrogen from the unreacted water vapor contained in the hydrogen electrode off-gas. [Solution] The electrolytic system comprises a solid oxide electrolytic cell, a heat-insulating case for housing the solid oxide electrolytic cell, a gas-liquid separation unit that separates water vapor in the hydrogen electrode off-gas discharged from the hydrogen electrode to the outside of the case by heat exchange with a coolant, an absorption chiller that generates a coolant by repeating a cycle in which liquefied refrigerant is evaporated in an evaporator to cool the coolant, vaporized refrigerant is absorbed into the absorbent in an absorber, the absorbent is heated in a regenerator to regenerate the vaporized refrigerant, and the vaporized refrigerant is cooled and condensed in a condenser, and a hydrogen electrode off-gas supply line that supplies the hydrogen electrode off-gas discharged from the hydrogen electrode to the regenerator as a heat source for the absorbent, and then supplies it to the gas-liquid separation unit.

The invention discloses a solid oxide electrolytic cell electrolyte thickness optimization method considering current leakage, and the method specifically comprises the steps: proposing a leakage current model suitable for an electrolyte-containing SOEC based on the internal current leakage phenomenon of an electrolyte layer, and deducing a leakage current analytical expression corresponding to the electrolyte thickness of the SOEC; determining the maximum oxygen partial pressure safety constraint condition of the SOEC anode-electrolyte interface; based on oxygen partial pressure safety requirements, the electrolyte thickness is optimally designed to guarantee leakage current control and efficient hydrogen production at the same time; in consideration of the randomness and volatility of renewable energy supply in an actual application scene, the hydrogen production rate is taken as a primary target, and meanwhile, the maximum oxygen partial pressure is taken as a safety constraint condition; and in combination with nonlinear quadratic programming and a particle swarm optimization algorithm, solving an optimization problem to obtain the optimal electrolyte thickness and the optimal hydrogen production rate of the electrolytic cell. According to the invention, the improvement of hydrogen production can be reasonably balanced, the safety of the oxygen electrode and the electrolyte is guaranteed, and the engineering application prospect is very good.

The invention relates to an assembly for an electrochemical module, comprising a stack (1) of solid oxide electrolyzer cells or solid oxide fuel cells, said stack being positioned between an upper terminal plate (2) and a lower terminal plate, each of the upper and lower terminal plates respectively comprising a connection portion for a current rod (5), which includes an opening (4) formed in said upper and / or lower terminal plate, receiving the current rod (5), as well as a notch (6) formed in the thickness of the plate and extending to said opening (4), defining in the plate a first portion (61) and a second portion (62) which are adapted to be constrained against said current rod (5). Figure for the abstract: [Fig.1]